Megan Fox sizzles while Machine Gun Kelly shows off his new pink hair at Avril Lavigne concert

They laughed off mistakenly being called a married couple earlier this week at the NBA All-Star Game.

But Megan Fox and her fiancé Machine Gun Kelly looked as close as ever on Friday night when they attended an Avril Lavigne concert at The Roxy Theatre in West Hollywood, which also featured their friends Kourtney Kardashian and her fiancé Travis Barker.

The 35-year-old actress put on a stunning display in a low-cut mesh to, while the 31-year-old rapper-turned-rocker looked chic with his newly dyed pink hair.

Edgy: Megan Fox, 35, stunned in a busty mesh top as she and her fiancé Machine Gun Kelly arrived at an Avril Lavigne concert at The Roxy Theatre in West Hollywood on Friday night

Megan left little to the imagination in her black crop top, which highlighted her bust and included a layer of mesh over her chest.

She contrasted the racy top with more modest black pants, and she kept herself warm on the chilly night with a black down jacket that she wore down around her arms. 

The Transformers star had her lustrous raven locks playfully styled into two pigtails, which framed her impeccably made-up face.

She accessorized with a small black handbag on a silver chain, and she added a splash of color to her look with her neon green nails. 

Back in black: Megan contrasted the racy top with more modest black pants, and she kept herself warm on the chilly night with a black down jacket that she wore down around her arms

Back in black: Megan contrasted the racy top with more modest black pants, and she kept herself warm on the chilly night with a black down jacket that she wore down around her arms

Old school: The Transformers star had her lustrous raven locks playfully styled into two pigtails, which framed her impeccably made-up face

Old school: The Transformers star had her lustrous raven locks playfully styled into two pigtails, which framed her impeccably made-up face

Machine Gun Kelly (real name: Colson Baker) arrived to the show in a black graphic cropped T-shirt with matching black cargo pants decorated with silver zippers.

He wore striking black-and-green trainers and revealed his freshly dyed shaggy pink hair.

The occasional actor caught up at the event with Willow Smith, who wore an open leather biker jacket with a black lace bra and no shirt, along with acid wash jeans covered in colorful patches.

Avril Lavigne was the star of the show as she promoted her new album Love Sux, which was released earlier on Friday, but MGK briefly went solo on stage during the show.

Punk style: Machine Gun Kelly (real name: Colson Baker) arrived to the show in a black graphic cropped T-shirt with matching black cargo pants decorated with silver zippers

Punk style: Machine Gun Kelly (real name: Colson Baker) arrived to the show in a black graphic cropped T-shirt with matching black cargo pants decorated with silver zippers

Risqué: The occasional actor caught up at the event with Willow Smith, who wore an open leather biker jacket with a black lace bra and no shirt, along with acid wash jeans covered in colorful patches

Risqué: The occasional actor caught up at the event with Willow Smith, who wore an open leather biker jacket with a black lace bra and no shirt, along with acid wash jeans covered in colorful patches

Leading the way: Avril Lavigne was the star of the show as she promoted her new album Love Sux, which was released earlier on Friday

Leading the way: Avril Lavigne was the star of the show as she promoted her new album Love Sux, which was released earlier on Friday

Letting loose: MGK is featured on her album on its second track, Bois Lie, which is coproduced by his pal Travis Barker, and the two rocked out on a solo track

Letting loose: MGK is featured on her album on its second track, Bois Lie, which is coproduced by his pal Travis Barker, and the two rocked out on a solo track

Wild man: The musician took things up a notch when he briefly went solo by spraying a bottle of champagne all over the stage and the first few rows of fans

Wild man: The musician took things up a notch when he briefly went solo by spraying a bottle of champagne all over the stage and the first few rows of fans

He’s featured on her album on its second track, Bois Lie, which is coproduced by his pal Travis Barker.

The three musicians were all joined by supporting musicians on stage, but MGK took things up a notch when he briefly went solo by spraying a bottle of champagne all over the stage and the first few rows of fans.

Avril, who wore a black skirt and a cut-out black top, beamed ear-to-ear while posing with her pal at the show. 

Friends: Avril, who wore a black skirt and a cut-out black top, beamed ear-to-ear while posing with her pal at the show

Friends: Avril, who wore a black skirt and a cut-out black top, beamed ear-to-ear while posing with her pal at the show

Big fan: Earlier on Friday on Instagram, he reposted a photo of Avril's album and wrote that he was 'so honored' to have collaborated with her on it

Big fan: Earlier on Friday on Instagram, he reposted a photo of Avril’s album and wrote that he was ‘so honored’ to have collaborated with her on it

Showmanship: MGK bared his tongue and teeth while putting on a show for the adoring crowd

Showmanship: MGK bared his tongue and teeth while putting on a show for the adoring crowd

Ready for his closeup: Machine Gun Kelly got intimately close to his fans, giving them some great photo opportunities

Ready for his closeup: Machine Gun Kelly got intimately close to his fans, giving them some great photo opportunities

Earlier on Friday on Instagram, he reposted a photo of Avril’s album and wrote that he was ‘so honored’ to have collaborated with her on it.

The rapper also documented his hair dye journey earlier in the day when he initially teased ‘guess what i’m doing…’ while posting a photo of a pale pink trucker’s hat and a paper towel smeared with what would turn out to be pink hair dye.

A subsequent photo revealed the change as he stood in profile while wearing a raggedy pink-and-white striped sweater.

He labeled the image ‘punk,’ but crossed out the ‘u’ and replaced it with an ‘i’ to spell ‘pink.’ 

Teasing: The rapper documented his hair dye journey earlier when he wrote 'guess what i'm doing...' while posting a photo of a pale pink trucker's hat and a paper towel smeared with pink hair dye

Teasing: The rapper documented his hair dye journey earlier when he wrote ‘guess what i’m doing…’ while posting a photo of a pale pink trucker’s hat and a paper towel smeared with pink hair dye

Not punk: A subsequent photo revealed the change as he stood in profile while wearing a raggedy pink-and-white striped sweater. He labeled the image 'punk,' but crossed out the 'u' and replaced it with an 'i' to spell 'pink'

Not punk: A subsequent photo revealed the change as he stood in profile while wearing a raggedy pink-and-white striped sweater. He labeled the image ‘punk,’ but crossed out the ‘u’ and replaced it with an ‘i’ to spell ‘pink’

In a post shared to his main Instagram page, MGK showed off his new style while relaxing outdoors in a back yard.

He had also painted his nails with a marbled hot pink, which he shared in closeup.

A photo taken before his dye job showed him relaxing on a bench outdoors while getting an IV drip.

A closeup snap revealed that his IV bag had been covered with a heart-adorned back reading ‘Love’ with his name taped onto it. 

Showing off: In a post shared to his main Instagram page, MGK showed off his new style while relaxing outdoors in a back yard. He had also painted his nails with a marbled hot pink

Showing off: In a post shared to his main Instagram page, MGK showed off his new style while relaxing outdoors in a back yard. He had also painted his nails with a marbled hot pink

Recuperating: A photo taken before his dye job showed him relaxing on a bench outdoors while getting an IV drip

Recuperating: A photo taken before his dye job showed him relaxing on a bench outdoors while getting an IV drip

Personalized: A closeup snap revealed that his IV bag had been covered with a heart-adorned back reading 'Love' with his name taped onto it

Personalized: A closeup snap revealed that his IV bag had been covered with a heart-adorned back reading ‘Love’ with his name taped onto it

Back in the house, he gave his fans an even better closeup view of his messy pink hair while gazing dramatically to the side.

‘i’m pink da ba dee da ba di,’ he wrote in his caption, parodying the Italian group Eiffel 65’s 1998 international hit Blue (Da Ba Dee).

A photo from earlier in the week showed him in a black robe with a pink vest at the 27 Club coffee shop in Cleveland, Ohio, where he had been to attend the NBA All-Star Game with Megan.

He included a fun snap of his outfit from the game — a charcoal sweater and black pants decorated with colorful costume jewelry — as it was laid out on the ground with his cartoon body drawn in it.

Take a peek: Back in the house, he gave his fans an even better closeup view of his messy pink hair while gazing dramatically to the side

Take a peek: Back in the house, he gave his fans an even better closeup view of his messy pink hair while gazing dramatically to the side

Wrong color: 'i’m pink da ba dee da ba di,' he wrote in his caption, parodying the Italian group Eiffel 65's 1998 international hit Blue (Da Ba Dee)

Wrong color: ‘i’m pink da ba dee da ba di,’ he wrote in his caption, parodying the Italian group Eiffel 65’s 1998 international hit Blue (Da Ba Dee)

On point: A photo from earlier in the week showed him in a black robe with a pink vest at the 27 Club coffee shop in Cleveland, Ohio, where he had been to attend the NBA All-Star Game with Megan

On point: A photo from earlier in the week showed him in a black robe with a pink vest at the 27 Club coffee shop in Cleveland, Ohio, where he had been to attend the NBA All-Star Game with Megan

Having a laugh: He included a fun snap of his outfit from the game — a charcoal sweater and black pants decorated with colorful costume jewelry — as it was laid out on the ground with his cartoon body drawn in it

Having a laugh: He included a fun snap of his outfit from the game — a charcoal sweater and black pants decorated with colorful costume jewelry — as it was laid out on the ground with his cartoon body drawn in it

Collaborators: The show on Friday was in honor of Avril's seventh studio album Love Sux, which was co-produced by Travis and Mod Sun

Collaborators: The show on Friday was in honor of Avril’s seventh studio album Love Sux, which was co-produced by Travis and Mod Sun

Taking a drink: Like Baker, she rocked out with a bottle of champagne on stage

Taking a drink: Like Baker, she rocked out with a bottle of champagne on stage

Success: The new album, her first in three years, has mostly received positive reviews from critics

Success: The new album, her first in three years, has mostly received positive reviews from critics

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