She probably wants the best birthday ever so for last year i went for an all American party. It was a hit! Me and my older sister set up a Volleyball net in the front yard and all my friends and I played that in the afternoon with loud music. Later, we went inside and had pizza! (You could also have a BBQ) then we opened presents and did cake!(: we all had fun taking picture and at 7:00 we went to the carnival as rode scary rides and ate cotton candy. When we got back at about 12, we got into the hot tub. After we got out we got into sweats and jackets and played games out side. Then when we all got a little tired we changed into PJs and went down stairs to have secret time. Then we watched a scary movie and went to bed. Te next day was just a fun lazy day. This was my birthday party last year in early June, I turned 13. I bet all her friends would love it.
Other ideas
Theater theme
Disney theme (fun for all ages)
Spa theme
Hotel theme
Girls night out theme
Supermodel theme (one of my favorites. You dress up in front of a black sheet and take pics. It's a blast)
4rth of July theme
Water theme
My sister is turning 12 she was going towards a hunger games themed party. Me and my mom are trying to convince her of something more simple such as the movie theatres. Do you guys have any ideas for a fun birthday party for about 16-18 people she wants a theme to it her birthdays late July. My sister likes zebra print cheetah print and in her past parties we've had kids come over and swim movie theatres Monte Carlo and The snow-white and the huntsman.