Britney Spears has been busting her booty at the gym (and at rehearsals for her Vegas gig!), so is it really that shocking that she'd look this good? Britney's new ads for her intimates collection have hit the web, and the 33-year-old pop star looks beyond amazing in these photos. Photoshop or not, we're a slave for Brit Brit!

In other news, Britney took part in Jimmy Kimmel's Mean Tweets last night, and despite totally getting insulted by one fan, she took things in stride -- and looked super hot while doing it. Click the video below to see!