Credit: Ramon/AKM Images

Kris Jenner wanted to look her best for Kim Kardashian's summer wedding -- which explains why the 55-year-old reality star recently went under the knife, according to an E! News exclusive.

Jenner's facelift will, of course, be featured on an upcoming episode of Keeping Up With the Kardashians (watch a sneak peek here). "I've never had such a stressful morning, honestly, in my life," Jenner says pre-surgery.

As Jenner begins to tear up, Kim, 30, reassures her mom that everything will be fine. "Don't cry," she says. "If you're scared, you don't have to do it. I'm sure people are scared all the time."

Once the surgery is over, Kim visits her mother's recovery room to offer more support. "Mom, you look fab," she tells the bandaged reality star. "You look gorgeous."

The procedure has been a well-kept secret among the Kardashian clan. According to Khloe, 27, the cosmetic surgery took place "about a month ago."

"She looks amazing," Khloe tells The New York Daily News. "They say you are supposed to have a lot of swelling for a week or so after, but I didn't notice."