Billie Eilish, the 19-year-old Grammy-winning singer, recently shared a TikTok video that gave her fans a behind-the-scenes look at the making of her “Lost Cause” music video.

The video features Eilish and a group of female friends dancing in silk pajamas, continuing the pajama party theme from the music video’s visuals.

The clip begins with Eilish and her backup dancers kneeling on the ground while mouthing along to her single.

As they start the dance choreography, Eilish’s blue top slips down and reveals her breasts.

In order to protect her modesty, she edited the clip and used a ghost emoji to cover up the exposed area. Eilish captioned the edit with the phrase “titties was falling out.”

Eilish was dressed in a La Perla two-piece, a brown puffer jacket, and a hat that resembled new merchandise.

During a twerking portion of the dance, she used another emoji to cover up her buttocks. She wrote “not showing u this” in the caption.

Later in the dance, Eilish’s breast was exposed again, which she pointed out in the caption. The dance also included a move called the heel toe.

At the end of the video, Eilish demonstrated her impressive flexibility by doing the splits.

Eilish was a dancer in her early teen years and it is clear from the video that she has maintained her skills.

The TikTok video was shared shortly after Eilish announced her “Happier Than Ever” world tour.