Credit: Kevin Winter/Getty Images Photo: Kim Kardashian and Kris Jenner Arrive at the Opening Gala for Resnick Pavilion in Los Angeles on September 25, 2010
The short answer? Yes. Kim Kardashian and Kris Jenner have both had Botox. Kim got her injections on-screen in Season 5 of Keeping Up with the Kardashians, and Kris has copped to it as a maintenance necessity.

In an interview with Nightline (see video below), Kim laughs off the rumors of a nose job, breast implants, and butt augmentation, telling Cynthia McFadden, "Trust me honey, if I take this bra off you will tell me I need to get them done. I'm totally not against plastic surgery. ... I've tried Botox before. That's the only thing that I've done... I’ve never had my nose done." Kim has admitted on her blog that she was a bit young to be Botox-ing.

She's also a big fan of limp plumper — "Lip plumper is a lot better than plastic surgery!" she gushed in the November 2010 issue of W magazine.

When Cynthia McFadden asked Kim about her supposed rhinoplasty in the same Nightline interview, Kris jumped in to say, "None of us have had our nose done." She did, however, admit she had her breasts done twice in 1988 because the first surgery didn’t work. The Kardashian kids came to their mother's defense, citing a great makeup artist — and, as Kris pointed out, a little Botox — as the reason Kris looks so different now than in older photographs.