OMG my niece is the queen of dress up!
2-3 years ago for Christmas I went to the dollar store and bought tons of clothes, jewels, tiaras..all the stuff she'd need for hours of fun. Then I got a cheap cardboard box, with a lid...like the type you'd store clothes in, painted it pink and put "Jessie's Dress-Up" in big foam letters on the top. My sister told me it was her most favorite gift. And she STILL plays dress-up with it! Cost me very little but making her happy was the best!!