Miley Cyrus and Scout Willis flash their nipples in photo shoot

Feb 22, 2015. Singer Miley Cyrus arrives at the 2015 Elton John AIDS Foundation Oscar Party in West Hollywood, California. (Reuters)

Miley Cyrus and Scout Willis have teamed up to promote “free the nipple.”

The provocative pop star and Bruce Willis and Demi Moore’s daughter posed together for a sexy photo shoot in which they both flashed their breasts.

An Instagram from the shoot was posted by photographer Mert Alas, who also photographed a nude Cyrus for the March issue of W magazine.

In the revealing photo Cyrus flashes both breasts while Willis reveals one. Willis' sister Tallulah also appears in the photo. While she doesn’t flash any body parts, she poses provocatively next to her sister in a minidress.

Both celebrities have posted topless pictures before as part of the campaigning to #FreeTheNipple, which protests Instagram’s anti-nudity policy. This time the nudity is camouflaged by red stars.

The “Wrecking Ball” singer also posed for several solo snaps in which she once again reveals her nipples.

Click here to see the photos. Warning: explicit images.