Olivia Rodrigo rocks a tiny black sports bra and an edgy pleated skirt during time out in Toronto

Olivia Rodrigo was spotted taking a walk through Toronto, Canada on Saturday afternoon.

The 19-year-old hitmaker was joined by her pal Holly Humberstone, 22, for her stroll along the city’s sunny streets.

Rodrigo’s outing comes just a day after Avril Lavigne joined her on stage during her ongoing Sour Tour for a performance of one of the latter’s chart-topping tracks.

Rodrigo wore a tiny black sports bra under a striped red cardigan sweater while stepping out with Humberstone, who currently serves as her opening act.

The Drivers License singer also rocked a pleated black midi skirt, as well as a pair of matching Vans Sk8-Hi sneakers.

The Grammy-winning performer’s raven hair flowed out from under a black cap from the Museum of Modern Art.

She accessorized her casual-cool look with a number of silver rings.

Casual cool: Rodrigo wore a tiny black sports bra under a striped red cardigan sweater while stepping out with Humberstone, who currently serves as her opening act 

Humberstone opted for a graphic-printed jacket and a wide-fitting pair of blue jeans during her time with Rodrigo.

The pair also sported facial coverings in case they needed to come into contact with anyone unfamiliar during their outing.

Lavigne was previously spotted sneaking into the back entrance of Toronto’s Massey Hall before the Good 4 U singer took to the stage on Friday evening.

The 37-year-old hitmaker sported a leather jacket and a red flannel skirt, as well as a pair of high-top leather boots.

Ready to go: Lavigne was previously spotted sneaking into the back entrance of Toronto’s Massey Hall before the Good 4 U singer took to the stage on Friday evening

During the show, Rodrigo brought out the singer for a performance of her track Complicated, which was originally released in 2002.

The Deja Vu singer later shared a shot of herself hugging Lavigne during the show to her Instagram account.

She also wrote a message in her caption to express her gratitude for the Sk8er Boi singer’s participation in her event.

Rodrigo wrote: ‘Toronto last night was special. thank u dearest @avrillavigne for singing with me. look up 2 u so much.’

The performer initially began her Sour Tour on April 5 with a performance that took place in Portland, Oregon.

She was joined by Gracie Abrams for the first 13 shows of her tour, after which Humberstone began opening for her.

Starting off strong: The performer initially began her Sour Tour on April 5 with a performance that took place in Portland, Oregon

The North American leg of her run of shows is currently set to conclude in San Francisco on May 27, and Chappell Roan will appear at the performance.

Rodrigo will later begin her tour’s European leg on June 11, and she will be joined by Baby Queen for the set of shows.

The Sour Tour is currently set to conclude with a duo of performances at London’s Eventim Apollo on July 6 and 7. 

Coming to a close: The Sour Tour is currently set to conclude with a duo of performances at London’s Eventim Apollo on July 6 and 7