We bought the Lifestyle Dream Kitchen by Step 2 for our 2 year old daughter & she LOVES it, and so do we. :) It is big enough for her & her two friends to play in. And she will soon be joined by her little sister. :) Step 2 has 3 different Lifestyle Kitchens...the "Dream" Kitchen is the middle-size one of the three, there is also a larger one...it's called Lifestyle Deluxe. They carry them at ToysRUs, however, we bought ours on Amazon.com, at the time, it was cheaper than TRU and had free shipping. Oh and we also bought the matching Table & Chairs set...and love those as well. :)
Anyway, here is the ToysRUs link to view it: http://www.toysrus.com/product/index.jsp?productId=231686...
Good Luck & Happy Birthday to your girls. :)