Mary Kate Olsen News & Pictures

Mary-Kate Olsen has earned a new enemy in Hills star Spencer Pratt after The Wackness star called her former high school classmate out on his “bad temper” during appearance on the Late Show with David Letterman on Thursday night. (Video Here)

Mary-Kate Olsen has hit the publicity track in promotion of her new film The Wackness. Here’s a video from MK’s Thursday night appearance on the Late Show with David Letterman.

Mary-Kate Olsen may be on the outs with her sister Ashley, but at least the pint-sized mogul’s still got a vibrant acting career to keep her busy. MK is currently taping a guest spot for an episode of ABC’s Samantha Who?, scheduled to air on the ratings winner this Fall.

Looks like we’ve got another case of Dear Abby vs. Ann Landers on our hands. The Mary-Kate and Ashley Olsen have fueled rumors that they are no longer on speaking terms after the sisters reportedly organized separate business meetings to discuss their clothing line so they won’t have to see each other.
“All meetings for their [...]

A tipsy Mary-Kate parties with Joel and Nicole.
Oh no! Pictures of a booze-filled party featuring Mary-Kate Olsen, Nicole Richie and Joel Madden have been leaked online. The photos, originally spotted on Photobucket.com, are rumored to be from a recent party celebrating Mary-Kate’s twenty-second birthday June 13th.