Yes, tutu is a Scrabble word!
...and is worth 4 points in Scrabble, and 6 points in Words with Friends
tutu
Noun
1. South African prelate and leader of the antiapartheid struggle (born in 1931)
2. Very short skirt worn by ballerinas
What Scrabble words can I make with the letters in tutu?
3 Letter Words
2 Letter Words