Nothing like a little healthy sibling rivalry to amplify the most watched television event in the country.
Whether you're psyched about the Super Bowl or are just waiting for the halftime show -- get it, Bey! -- you can't escape the biggest story of this year's game: brothers John and Jim Harbaugh are the coaches who will go head to head on Sunday, John leading the Ravens and Jim the 49ers.
Though surely a first of its kind in the Super Bowl, it isn't a first in show biz. Siblings who catch the acting bug together or decide to take their singing out of the shower are a common sighting, and have been for some time.
Here are some of our favorite pairs (or triplets) of celebrities who grew up fighting over the last piece of pie, and ended up bonafide stars: