Can't keep her hands to herself! But we're not shocked...

On Monday night Lady Gaga photobombed Kate Hudson on the red carpet, and the pop star proceeded to grab the actress' tush as cameras snapped away. Per usual, Gaga showed off her gams in a Versace bodysuit and she apparently joked with a Vogue reporter that the look took her “10 minutes” to put together the look. Kate wowed in Versace as well, but her look (and behavior) was a bit more ladylike.

And they weren't the only celeb pairings on the red carpet! Willow Smith and her brother Jaden posed for a pic together:

And of course, Madonna showed plenty of skin and took Riccardo Tisci as her date. Hope Kim K wasn't jelly: