Jonathan Lipnicki -- better known as Tom Cruise's little buddy in "Jerry Maguire" -- turned 21 on Saturday.
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According to People magazine, Lipnicki celebrated the big birthday in Las Vegas with his parents, his sister, an aunt, three cousins and an assortment of friends.
The Lipnickis celebrated Friday with a dinner at Tao before arriving a little after midnight at the Surrender Nightclub at the Encore, where he enjoyed vodka cocktails with his buddies late into the night.
The party continued Saturday with a cake and dinner at Lavo.
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