Miley Cyrus suffered a wardrobe malfunction backstage at Miami’s iHeartRadio Ultimate Pool Party. Her top suddenly came undone when she was hosting grand prize winner Natalie Bergen at a private penthouse.

Cyrus, 20, who was wearing her engagement ring from Liam Hemsworth, had Bergen and some other girls backstage at a private listening party, where she played them a song from her new album.

But E! Online reports that while they were there, Cyrus’ top popped open and one of the contest winner’s helped her secure it again. She gave Bergen a poster that was signed “Natalie! Twerk Bitch/Love, Miley/PS Sorry about da titties!"

Hollywoodlife reports that Cyrus surprised the contest winners with the private party, where she showed them more than she bargained for.

Cyrus has said of her new single “We Can’t Stop,” "People need to hear something inspirational, and it's just about having a good time. And I feel like everybody in my age group right now, we're just trying to have a good time."

image: Twitter