PHOTOS: 15th Annual Chicago Polar Plunge

Sunday, March 1, 2015
Vince Vaughn, center in Blackhawks jersey, takes part in the Chicago Polar Plunge at North Avenue Beach on Sunday, March 1, 2015 in Chicago.
Vince Vaughn and Special Olympics Chicago President Casey Hogan take part in the Chicago Polar Plunge at North Avenue Beach on Sunday, March 1, 2015 in Chicago.
Actor Vince Vaughn took the Polar Plunge into icy Lake Michigan in Chicago on Sunday.
Actor Vince Vaughn took the Polar Plunge into icy Lake Michigan in Chicago on Sunday.
Actor Vince Vaughn took the Polar Plunge into icy Lake Michigan in Chicago on Sunday.
Actor Vince Vaughn took the Polar Plunge into icy Lake Michigan in Chicago on Sunday.
Lady Gaga and her fiancee, actor Taylor Kinney, take part in the CHicago Polar Plunge at North Avenue Beach.
Lady Gaga and her fiancee, actor Taylor Kinney, take part in the CHicago Polar Plunge at North Avenue Beach.
Pop star Lady Gaga feels the arctic chill after taking the Polar Plunge into icy Lake Michigan Sunday.
Pop star Lady Gaga feels the arctic chill after taking the Polar Plunge into icy Lake Michigan Sunday.
Pop star Lady Gaga feels the arctic chill after taking the Polar Plunge into icy Lake Michigan Sunday.
Pop star Lady Gaga feels the arctic chill after taking the Polar Plunge into icy Lake Michigan Sunday.
President Lincoln felt the chill of Lake Michigan after taking the Polar Plunge, benefitting Special Olympics Chicago.
ComEd representatives take the 2015 Polar Plunge Sunday.
Elmo feels the deep freeze Sunday at the 2015 Polar Plunge benefitting Special Olympics Chicago.
Thousands braved the icy Lake Michigan water Sunday to take part in the 15th Annual Chicago Polar Plunge.
Thousands braved the icy Lake Michigan water Sunday to take part in the 15th Annual Chicago Polar Plunge.
Chicagoans take the plunge to support Special Olympics Chicago in the 15th Annual Chicago Polar Plunge.
Chicagoans take the plunge to support Special Olympics Chicago in the 15th Annual Chicago Polar Plunge.
Chicagoans take the plunge to support Special Olympics Chicago in the 15th Annual Chicago Polar Plunge.
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PHOTOS: 15th Annual Chicago Polar PlungeVince Vaughn, center in Blackhawks jersey, takes part in the Chicago Polar Plunge at North Avenue Beach on Sunday, March 1, 2015 in Chicago.
Barry Brecheisen

Vince Vaughn, Lady Gaga and hundreds of brave Chicagoans participated in the 15th Annual Chicago Polar Plunge supporting Special Olympics Chicago on Sunday, March 1.