Credit: Larry Busacca/Getty Images for Time Inc

Ms. Kardashian went to Washington!

On Saturday, Kim Kardashian attended the star-studded White House Correspondents' Dinner in Washington, D.C., and made one 16-year old very happy: Justin Bieber.

The teen phenom told reporters that Kardashian, 29, was the celeb he most wanted to meet that night.

PHOTOS: Kim strips down for an unretouched pic

Wish granted: the odd couple shook hands, gabbed for several minutes and posed for photos together.

Tweeted Kardashian: "I officially have Bieber fever!" Bieber posted a TwitPic of them at the event. "Look, it's my girlfriend."

For her big night out in the capital, Kardashian decided to recycle -- she Tweeted about her strapless black and white "vintage Valentino" from her mom, Kris Jenner. She wore her hair up in a bun and favored bright red lipstick.

Other new friends of the night? Demi Lovato and Fox News' Greta Van Susteren. "I am Greta Van Susteren's date this weekend," she Tweeted.

PHOTOS: Kim and her sisters when they were kids

"What a great night!" she raved. "President Obama is funny!!! Gave a hysterical speech! Michelle is stunning! Room filled w beautiful people!"

Other guests of the evening included Jessica Alba, Adrian Grenier, Chace Crawford, Matthew Morrison, Cynthia Nixon, Jessica Simpson, Scarlett Johansson, the Jonas Brothers, Ryan Seacrest and many, many more.