Galaxy Quest (1999)

Gwen often wears low-cut outfits that show (to varying degrees) her ample cleavage. She comments that past interviews focused only on her "boobs" and not her.

Kwan, Fleegman and Laliari are in a control room where Kwan unleashes the captured rock monster on a group of aliens in another room. After the three watch the attack on the monitor, Laliari starts kissing Kwan passionately in front of Fleegman. During the moment, she starts feeling up Kwan with her tentacles. Eventually, Kwan and Laliari disappear behind the control board, causing Fleegman to comment "Oh that's not right!"

On account of a deleted seduction scene, with 20 minutes left in the movie there is a very abrupt change where Gwen's uniform switches from being zipped up to be zipped down to her belly button. Her chest and bra are partially on display for the remainder of the movie.

There's a visual joke about Nesmith kneeling and bending over to look for his shoes (while only wearing a shirt) and that the four aliens get a view of his bare butt sticking up in the air, but due to our angle we don't see what they do.