Miley Cyrus Just Simultaneously Showed Off Her Underboob and Her Thong

From belfies (butt-selfies) to coffee drinking, lingerie-clad photos, we should probably just crown Miley Cyrus the queen of mirror pictures. And she's done it yet again with another sexy series of selfies.

On Sunday, the Hannah Montana alum took to her Instagram Story to share a couple of steamy pictures in her dressing room mirror backstage at the Lollapalooza music festival. The "Party in the U.S.A." singer posed in a white tank that was folded up to reveal some underboob, which she paired with high-waisted sheer black stockings that also showed her black string thong underneath.

Miley Cyrus
Miley Cyrus

Miley Cyrus/Instagram

The singer paired the sensual outfit with some layered silver necklaces, silver hoop earrings, and her edgy mullet haircut. Her cropped shirt also exposed a few tattoos along her ribs. This time, The Last Song star opted for no caption.

RELATED: Miley Cyrus Rode a Tractor in a Sparkly Gucci Jumpsuit and Sky-High Platform Boots

Miley Cyrus
Miley Cyrus

Miley Cyrus/Instagram

The sexy snaps also appeared in a gallery post on her main feed with other photos from the festival.

"My Sunday best. 💒🙏✝️," she wrote alongside a series of photos from the performance. In the first photo, Cyrus paired a red leotard with the black stockings and a red jacket. The last slide was a video of Cyrus interacting with a crowd member.

The night-one headliner of the festival brought out several special guests during her performance including Billy Idol, The Kid LAROI, Juicy J, and Wiz Khalifa. At one point during the festival, she pulled a very Miley-esque move and posed atop a tractor while wearing a sparkly red Gucci romper. During her two-hour set, the singer performed her classic hits including, "Party in the U.S.A.," "We Can't Stop," and "Malibu."