Closer (2004)
In Mike Nichols’ Oscar-nominated film adaptation of Patrick Marber’s book, Natalie Portman plays a young American exotic dancer in London. Although Nichols reportedly removed all of Portman’s previous nude scenes in post-production, Portman's bra slips down about an inch too far while speaking to Clive Owen. Whoops!
Titanic (1997)
There was one small wardrobe malfunction in 1997's critically-acclaimed Titanic. Rose Dawson (Kate Winslet) has a beauty mark on the left side of her face when she's first introduced to the audience, but the mark suddenly moves to the right side of her face for the rest of the film.