M.W.
I'd advise you to hold off until she's school age. She'll be responsible enough to pick up the pieces and yet young enough to enjoy them for a few years. I played with them until 5th grade, and probably would've longer if we had not moved and had to keep lot of stuff in storage for about a year.
I have the loving family dollhouse and dolls for my 4 year old. She loves them, they have a car and other things to make the play very interactive, but no clothes to keep track of. Plus they are very appropriately dressed. My daughter wants to play with barbies, but this is a much better alternative to the trashy stuff out there, and she'll get the same benefit of creative play from them instead.
Best wishes!