Cameron Diaz had a warm hello for Ellen Degeneres on her show yesterday, while promoting Shrek the Third, as her blouse let loose an unexpected nipple guest.  Ellen was quick to point out to Cameron her wardrobe malfunction (odes to ex-boyfriend Justin Timberlake).

Cam’s loose-fitting top slipped down and left her right breast exposed. It’s a good thing the cameraman was probably already starring at her breasts because he was quick to shoot her from the side until Ellen alerted Cameron about the nip slip.

Cameron, who was dressed in a beige suit, laughed off the incident after DeGeneres said, “They’re asking you to pull up your shirt.�

Diaz said, “Excuse moi. Thank you. I went through so many foolproofs on this too – ‘It ain’t gonna fall out, I promise.’ I hate double-stick tape; you can always see double-stick tape.â€?

DeGeneres responded, “Well, we saw something else.�