Well here's what I have planned so far:
Fingernail painting - We will be painting the girls fingernails with whatever color they want as the base coat, then we'll be doing flowers with white, or if they choose white as the base we'll use color for the flower. I learned a little trick from my hair stylist. She told me to paint on a clear top coat first, then to use acrylic paint (like Delta) as the color for their nails! Then just put another coat of clear over the top.
Face painting - Going to paint flowers on their cheeks in whatever color they like
Crafts - Flower pots. I have some clay pots left over from the Christmas crafts I did (the small ones), so they can paint their pot. Then I'll have them paint some craft sticks green and glue foam flowers to the ends. Then we'll secure the flowers with styrofoam in the bottom of the pot. We'll probably cover the styrofoam with green felt to hide it. I also found flower shaped sponges, so they can sponge the pot if they want to afterward.
Game - now don't laugh

I was thinking about doing a "pin the center on the flower" type of game.

I bought a Minnie Mouse rubber stamp set that came with bow, flower, and ribbon rubber stamps, so that will be the prize for the winner.
Party favors - I found little flower mirrors with play lipsticks, I also have a bunch of brand new flavored lip balms from Avon, and figure I'll get some play jewelry to go in there too. I also have some lollipops I bought at the dollar store.
Cake - I am going to make a confetti cake. I'm going to use a single round cake pan, going to make half the batter in there. Then the remaining batter I'm making cupcakes with. I am going to frost the cake with pink icing (per my dd's request) and the cupcakes with white. Then on the pink cake I will draw a large white flower and on the white cupcakes I'll use cake decorator gel in different colors to draw flowers on them (pink, orange, blue, green, purple, yellow), and gumdrops for the centers. The reason I am doing the cake sized one is so there's enough room to put 8 candles on
Popcorn & Movie - Microwave popcorn of course, and I figured that The Princess Diaries would be a good movie. It's definitely a "little chick" flick and my dd has been wanting to see it.
I have also decided to stock up on juice boxes so I don't have to keep filling up cups, nor will I have to worry about spills.
I am hoping to have everyone down by 10:00 or 10:30. I'll make pancakes in the morning and use whipped cream to put flowers on them

Then I'm having the parents pick the kids up by 11:00 am.
PHEW!