Mandy Moore and Katherine McPhee flaunt cleavage at gala

Mandy Moore and Katherine McPhee led the pack as they walked the red carpet at Thursday night’s SAG-AFTRA Foundation Patron of the Artists Awards 2017.

The actresses and singers, both 33, dared to bare in revealing gowns as they joined a host of stars for the special event honoring Lionel Richie and Kate Winslet.

Moore rocked a sleeveless red patterned gown while McPhee showed off her assets in a black dress with plunging neckline.

Busting out: Mandy Moore and Katherine McPhee dared to bare in revealing gowns as they walked the red carpet at Thursday's SAG-AFTRA Foundation Patron of the Artists Awards in LA

Busting out: Mandy Moore and Katherine McPhee dared to bare in revealing gowns as they walked the red carpet at Thursday’s SAG-AFTRA Foundation Patron of the Artists Awards in LA

Moore, who stars in NBC’s hit drama series This Is Us, looked gorgeous in her floral-themed gown that had a layered skirt.

The thin straps and low-cut bodice revealed her cleavage and toned arms.

Her brunette locks were worn loose about her shoulders and she penciled in her brown brows.

Here eyes were rimmed with mascara and black kohl and she added dark red lip color to complete her look.

Flower power: Moore, who stars in NBC's hit drama series This Is Us, looked gorgeous in her floral-themed red gown that had a layered skirt

Flower power: Moore, who stars in NBC’s hit drama series This Is Us, looked gorgeous in her floral-themed red gown that had a layered skirt

Pretty: The gown's thin straps and low-cut bodice revealed the actress's cleavage and toned arms. Her brunette locks were worn loose about her shoulders

Pretty: The gown's thin straps and low-cut bodice revealed the actress's cleavage and toned arms. Her brunette locks were worn loose about her shoulders

Pretty: The gown’s thin straps and low-cut bodice revealed the actress’s cleavage and toned arms. Her brunette locks were worn loose about her shoulders

Flawless: Moore, 33, penciled in her brown brows and her eyes were rimmed with mascara and black kohl. She added dark red lip color to complete her look

Flawless: Moore, 33, penciled in her brown brows and her eyes were rimmed with mascara and black kohl. She added dark red lip color to complete her look

McPhee’s gown had a very skimpy bodice and she was literally busting out front and side.

It had a tight panel around the waist and then fell to the floor with black lace fringe detailing at the upper thigh. 

The American Idol runner-up added a black tailored jacket draped across her shoulders and wore her hair in a bun at the nape of her neck.

She added statement emerald green chandelier earrings along with dramatically black liner around her eyes and dark pink lips. 

Dramatic: McPhee's gown had a very skimpy bodice,  a tight panel around the waist and a skirt that  fell to the floor with black lace fringe detailing at the upper thigh

Dramatic: McPhee’s gown had a very skimpy bodice,  a tight panel around the waist and a skirt that fell to the floor with black lace fringe detailing at the upper thigh

Bling: The American Idol runner-up, 33, added a black jacket draped across her shoulders. She wore her hair in a bun at the nape of her neck and  emerald green chandelier earrings

Bling: The American Idol runner-up, 33, added a black jacket draped across her shoulders. She wore her hair in a bun at the nape of her neck and emerald green chandelier earrings

Kristen Bell, 37, chose a pretty short-sleeved dress decorated with blue, yellow and gray flowers.

The backless bodice had a gathered neck  and the skirt fell to just below her knees.

The star of the just released raunchy comedy A Bad Mom’s Christmas  styled her blonde hair in loose waves and added rosy blush and red lip color along with a pair of white stilettos.

Classy: Kristen Bell, 37, chose a pretty short-sleeved dress decorated with blue, yellow and gray flowers

Classy: Kristen Bell, 37, chose a pretty short-sleeved dress decorated with blue, yellow and gray flowers

Flashed some skin: The backless bodice had a gathered neck and the skirt fell to just below her knees. She added a pair of white stilettos

Flashed some skin: The backless bodice had a gathered neck and the skirt fell to just below her knees. She added a pair of white stilettos

Flashed some skin: The backless bodice had a gathered neck and the skirt fell to just below her knees. She added a pair of white stilettos

Nailed it: Academy Award-winning actress Holly Hunter, 59, looked sensational in a shiny dark green patterned dress paired with towering white platform heels 

Nailed it: Academy Award-winning actress Holly Hunter, 59, looked sensational in a shiny dark green patterned dress paired with towering white platform heels 

Honoree Lionel Richie, 58, brought along his teen daughter Sofia as well as his longtime girlfriend Lisa Parigi.

The hitmaker opted for an all black ensemble of tailored jacket and skinny pants.

Sofia, 19, chose a contrasting look, donning a white blazer dress that showed off her legs.

The blonde girlfriend of reality star Scott Disick added shiny black strappy heels and stunning diamond chandelier earrings.

His girls: Honoree Lionel Richie, 58, brought along his teen daughter Sofia as well as his longtime girlfriend Lisa Parigi who looked fabulous in a full-length sleeveless red gown

His girls: Honoree Lionel Richie, 58, brought along his teen daughter Sofia as well as his longtime girlfriend Lisa Parigi who looked fabulous in a full-length sleeveless red gown

Honoree: The hitmaker, who's 68, opted for an all black ensemble of tailored jacket and skinny pants

Honoree: The hitmaker, who’s 68, opted for an all black ensemble of tailored jacket and skinny pants

Stylish: Sofia, 19, donned a white blazer dress that showed off her legs. The blonde girlfriend of reality star Scott Disick added black strappy heels and stunning diamond chandelier earrings

Stylish: Sofia, 19, donned a white blazer dress that showed off her legs. The blonde girlfriend of reality star Scott Disick added black strappy heels and stunning diamond chandelier earrings

Also on the V.I.P. guest list was actress Kate Mara and her husband, actor Jamie Bell.

Mara, 34, wore a strapless black gown with a halter tie and semi-sheer panels.

Her British spouse, 31, was dapper in a navy two-piece suit with white shirt and navy paisley tie.

Recently married: Also on the V.I.P. guest list was actress Kate Mara and her husband, actor Jamie Bell

Recently married: Also on the V.I.P. guest list was actress Kate Mara and her husband, actor Jamie Bell

Elegant: Mara, 34, wore a strapless black gown with a halter tie and semi-sheer panels

Elegant: Mara, 34, wore a strapless black gown with a halter tie and semi-sheer panels

Dapper: British-born Bell 31, wore a navy two-piece suit with white shirt and navy paisley tie

Dapper: British-born Bell 31, wore a navy two-piece suit with white shirt and navy paisley tie

Looking good: British actor Andrew Garfield was also on hand wearing a checked jacket with matching dark blue trousers and t-shirt

Looking good: British actor Andrew Garfield was also on hand wearing a checked jacket with matching dark blue trousers and t-shirt

This Is Us star Chrissy Metz, 37, walked the red carpet in a green frock with black piping.

She stepped out in black flats and added color with red lips and rosy blush. 

Black-ish actress Tracee Ellis Ross, 45, wore a black full-length dress with black-and-white patterned bell sleeves.

The daughter of Motown diva Diana Ross added pointed toe bright red pumps. 

Breakout star: This Is Us star Chrissy Metz, 37, walked the red carpet in a wraparound green frock with black piping tied at the waist with a sash and black flats

Breakout star: This Is Us star Chrissy Metz, 37, walked the red carpet in a wraparound green frock with black piping tied at the waist with a sash and black flats

Eye-catching: Black-ish actress Tracee Ellis Ross, 45, wore a black full-length dress with black-and-white patterned bell sleeves and added pointed toe bright red pumps

Eye-catching: Black-ish actress Tracee Ellis Ross, 45, wore a black full-length dress with black-and-white patterned bell sleeves and added pointed toe bright red pumps

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