Los Angeles, California - August may be drawing to a close, but Olivia Rodrigo is still in her Brat summer era!

As she continues her sold-out stay at LA's Kia Forum, the 21-year-old pop star has spilled her guts about the songs she has on repeat.

Speaking to Complex on Friday, Olivia gushed over Charli XCX's already-iconic album, which has taken over the pop culture zeitgeist – and US politics!

"I mean, I love the Charli XCX and Billie [Eilish] song Guess," the Grammy winner said when asked about her song of the summer.

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"So good. It's been on repeat."

The collab, which dropped earlier this month is actually a remix of a song featured on the original Brat album.

Guess marked Billie's first-ever feature, and she gave the song a new sapphic flair with her steamy verses.

As for what else Olivia is bumping these days, she admitted that Soulja Boy and Nicki Minaj are on her pre-show hype playlist, with the Super Bass rapper's hit FTCU among her favorites.

Olivia plays her final show at the Kia Forum on Saturday night before heading to Inglewood's all-new Inuit Dome for two performances, kicking off on Tuesday.