When it comes to reinventing her image, Lady Gaga [1] has proved time and time again that she's a master at keeping us guessing. That being said, there's one thing about each of her looks that has yet to change: the level of heat she brings to each era. From her daring red carpet ensembles [2] to rocking the world's tiniest shorts [3] out and about on the sidewalk, Gaga certainly knows how to have tongues wagging, and that doesn't stop in her music videos [4]. Revealing costumes, risqué dance moves, and hunky screen partners have made for some seriously sexy moments over the years, so check out the steamiest highlights ahead.