Billie Eilish throws a sexy slumber party in 'Lost Cause' music video

After posing in lingerie for the cover of British Vogue, Billie Eilish has shocked fans anew by dropping a sexy and carefree music video for her new song "Lost Cause."

The 19-year-old singer-songwriter could be seen running around with her girlfriends around a villa, dancing and just straight up having a good time in some comfortable loungewear.

She also took to Instagram to tell her fans how much she enjoyed making the MV.

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"We had the time of our lives being hot & shooting this," she wrote.

"Lost Cause" is part of Eilish's new album " Happier than Ever " expected to come out next month.

The record will also feature her previously released songs, "My Future," "Your Power," and "Therefore I Am." —Margaret Claire Layug/JCB, GMA News