Joan Rivers Calls Christina Aguilera 'Fatso' On 'Late Night' (VIDEO)

06/19/2012 07:35 am ET | Updated Jun 19, 2012

Joan Rivers didn't pull any punches when she stopped by "Late Night With Jimmy Fallon" (Weeknights, 12:37 a.m. ET on NBC) Monday night.

Plugging her new book, "I Hate Everyone ... Starting With Me," Joan cracked jokes at the expense of celebrities like Winona Ryder and "Octomom" Nadya Suleman.

She also took pot shots at "The Voice" coach Christina Aguilera's weight.

"I'm at Spago's with Melissa, and we're eating dinner," Joan joked, "and Fatso is across the way, and she comes lumbering over with that no-neck look. And I go, 'here it comes.' She comes over to my table and says, 'you gonna finish that?'"

Catch Joan in action on "Fashion Police," Fridays at 10 p.m. ET on E!. "Joan & Melissa: Joan Knows Best?" will return for Season 3 on WE in 2013. "Late Night With Jimmy Fallon" airs weeknights, 12:37 a.m. ET on NBC.

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