Joan Rivers Dances The Stripper Pole, Gets Wild In Vegas On 'Joan & Melissa: Joan Knows Best?' Finale (VIDEO)

03/28/2012 05:46 am ET | Updated May 28, 2012

For the season finale of "Joan & Melissa: Joan Knows Best?" (Tue., 9 p.m. ET on WE), Joan Rivers had the brilliant idea to head off to Las Vegas to celebrate the 20th anniversary of Sabrina, her and Melissa's long-time assistant. To make the day even more special, she suggested everyone wear the exact same thing they wore 20 years ago.

But 20 years ago, Joan was apparently a somewhat slimmer woman. She couldn't even come close to fitting back into that dress, no matter how many pairs of Spanx she put on underneath. So she just left it unzipped and went with it.

Going with it also saw Joan hanging out at a strip club, flirting with the male strippers, dancing on the pole and rocking a 1960s/1970s vibe. All things most 78-year old women would never do, which is why Joan Rivers is truly one of a kind.

"Joan & Melissa: Joan Knows Best?" wrapped its second season Tuesday night at 9 p.m. ET on WE.

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