my pre teen chickie

My dd will be 12 Next month. I love her to bits and she is such a great kid. Does good in school, helpful, sweet, Etc. the only issue is her hygiene. It's constant eye rolling when I tell her to shower or do anything with her hair. I have to still remind her to brush her teeth and put deodorant on, changer her underwear and bra. 
I've even joked with her that I am going to start a sticker chart and put it next to her brothers potty chart. 
She just seems uninterested in these girl things. Any ideas on how to help me stop being a nag and for her to just do it on her own. Let her go to school smelly lol? Idk