Hi J.,
I have 2 girls and 2 boys and we have had many parties, my oldest daughter is 12 almost 13, and one year we did a jungle theme, it was so much fun, I rented a bounce house and put all the jungle stuffed animals around the house and outside. We hired a lady that brings animals to show the children. There's also the critterman that does the same thing. You can get inexpensive flip flops from hobby lobby and make jungle theme flip flops by getting jungle print bandanas and cutting them in strips and the girls can tie them on. We did that for a swimming hawaiian themed party, we hired a hula girl to teach the girls how to hula when my daughter turned 10. That was so much fun!! They did the limbo too.
The girls can come dressed in their zebra and cheetah print outfits. I love that age it's so much fun!!
I did a western theme for my twin boys, but that could be done for girls as well, they could come in their cowgirl gear.
We found someone in the Dallas Child magazine who could bring a pony, and other farm animals for a petting zoo, (don't forget the hand sanitizer!!!) That was a blast, the children got to ride the pony and pet the animals. For the thanks for coming gift, I got all the kids a cowboy hat and bandanas and a little stuffed horse from oriental trading company. They have tons of stuff and ideas. I'm planning my twins Pirate party now. I hope some of these help.
Good Luck and have fun.!!