WATCH: Rachel McAdams Helps Justin Hartley Strip Down for a Good Cause

This Is Us star Justin Hartley had a little help from Rachel McAdams when he stripped down for charity.

The actor appeared on Thursday’s (Oct. 20, 2016) episode of Ellen, where Ulta Beauty agreed to give $20,000 to the Breast Cancer Research Foundation if Hartley took off his tank top.

The former soap opera star was seated underneath pink water balloons, as the Mean Girls alum and Ellen DeGeneres pulled out sticks holding the balloons up. One by one, they started falling and eventually Hartley, 39, was completely drenched.

Click through the gallery below to see how it all went down!