Another tried and true Get up and Go Hairstyle in our house is The Clip. I'm sure you've seen this one before!
Just a simple ponytail off to the side, with a clip to dress it up!
If you have time, and you really want to make sure that clip is staying put, you can use this little trick to keep your hairbows in place (video included in that link!)
I usually fluff the back of her hair to make it nice and big on days that I don't take the time to detangle it.