Ruthie - I'll also be there the same time as you. I have two daughters, one 7 and one 4, and when my 4-year-old was 3.5 (like yours is now), she went to a birthday party at a LL at a nearby mall. She came home all dolled up, with a toy headset/microphone-boom around her head (she chose the "rockstar" option), and didn't take it off for a week. She wore it to Wal-Mart, she wore it to play outside, she wore it when watching American Idol, she wore it to bed (but that's where we drew the line). So, if she's a girlie-girl like mine, she's not too young for LL.
I'll have to admit that
I thought she was too young to be getting all made-up like that, but I'm just an overprotective dad...