Britney Spears gets the honor to light the christmas tree in Las Vegas
Matt Damon has his BFF's back
Some celebrities have basically been born in Hollywood - but they haven't always turned out that good.
Britney Spears has had a long career and her look has certainly changed throughout the years - take a look at our picture special here!
Ariana Grande sings kids songs and sounds exactly like the musical stars
Check out all the crazy and beautiful outfits from the 2015 VMA's