Watch John Legend serenade his dogs as they get married -- shocking long-time love Chrissy Teigen -- for a very good cause.

When you donate, through Omaze.com, to the Show Me Campaign -- which will help rebuild the auditorium at South High School in Springfield, OH -- you will be entered to win a private show by the "All of Me" singer -- for your own wedding, or any other special event you have planned.

There are a string of other celebrity-inspired prizes to be had through Omaze: want to hang with Iron Man at the Avengers: Age of Ultron premiere? Donate to Julia's House. And a contribution to New York Collaborates for Autism and Night of Too Many Stars might get you drawn in to an episode of The Simpsons.

Check out Omaze.com for more amazing opportunities.

More From Hot 975