Vince Vaughn was the celebrity guest of honor at the Polar Plunge, but a slew of other celebrities were also in attendance, including pop star Lady Gaga and her fiancé, Taylor Kinney.
Lady Gaga entered the water on Kinney's shoulders, and they took the dip together, fully immersing themselves in the frigid water. Kinney was scheduled to participate in the event his year with co-stars David Eigenberg and Randy Flagler. All three participated in last year's event.
Lady Gaga and Kinney recently got engaged, so it's no surprise the pop star decided to take the plunge with Kinney.
In addition to the pop star and her fiancé, other local and national celebrities took part in the event to raise money for Special Olympics Chicago. Vince Vaughn agreed to be the guest of honor after Special Olympics successfully recruited him with a social media campaign using the hashtag #VinnyDippin.
"Chicago P.D." stars Jon Seda and Brian Geraghty also took the plunge.
On the local scene, mayoral candidate Jesus "Chuy" Garcia was scheduled to appear at the plunge as was Cook County State's Attorney Anita Alvarez.
Last year, comedian Jimmy Fallon and Chicago Mayor Rahm Emanuel took the plunge. Fallon's celebrity appearance raised nearly $1 million for Special Olympics Chicago, the benficiary of the event.