Think of crazy antics and one of the first celebrities that come to mind will be Lady Gaga.
This time however, she did something crazy for the right reasons.
The singer jumped into the freezing cold Lake Michigan while in Chicago.
Why you might ask? Well she's doing this for charity. The money generated from the event will go toward heloing the Special Olympics.
According to AcidCow, "water was so cold that her hair actually froze, but it was all worth it."
Take a look at what happened in the gallery below.