..so far, they will design their own T shirt (fabric pens), watch the latest Barbie movie on piles of cushions, accompanied by pizza etc. Bored children can come and get their nails painted by me, or do some making.
After movie, one party game planned - blowing feather on a sheet one, as fairly active in small space after sitting for an hour.
Then friend coming to tell 15 minute 'magical story' involving all the girls.
So just in case we need extra games - I'm panicking in case they hate the movie or just get bored - any ideas? 15 7-8 year old girls in a medium sized space 
All ideas v v welcome!