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Meghan MarkleandPrince Harrycelebrated their marriage with the help of a few famous friends.

“It was a huge dance party, everyone was letting loose and had a blast,” a source tells PEOPLE of the night. “Just a fun night and not stuffy at all.”

Clooney, who co-founded the tequila brand Casamigos, showed off his bartending skills at the bash.

“George Clooney hopped behind the bar and was mixing drinks for guests,” says the source.

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And while Williams didn’t have a full court available to show off her tennis skills, she channeled her competitive side with a classic drinking game.

“Serena did play beer pong,” adds the source. “She’s super old-school like that.”

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During the reception, both Meghan and Harry gave touching speeches where they thanked their guests and expressed their excitement for their future together.

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“The speeches were both touching and funny,” says the source. “Harry and Meghan’s personalities really shined.”

Meghan Markle and Prince Harry on their way to their evening reception.Steve Parsons - WPA Pool/Getty

Prince Harry Marries Ms. Meghan Markle - Windsor Castle

Meghan stunned ina sleek Stella McCartney gownfor the occasion, while Harry looked dapper in a tux.

Earlier in the day,Queen Elizabethhosted the daytime gathering following the wedding ceremony and procession through Windsor. The first reception was held inside Windsor Castle, at St George’s Hall, and all 600 guests who were invited to the ceremony atSt. George’s Chapelwere present.

source: people.com