The city of Chicago held a Polar Plunge event over the weekend in which participants ran into the freezing cold Lake Michigan to raise money for the Special Olympics. Two of the celebrity participants were Lady Gaga, and her fiancé Taylor Kinney, who stars on the show Chicago Fire. Vince Vaughn also took place in the fundraiser, sporting a Chicago Blackhawks jersey, reports Us Weekly. This year's Polar Plunge raised over $1 million.