Honeslty, the only thing that brings out outter beauty, is inner beauty. But, for starters, you could wear cute clothes. Like babydoll tops and skinny jeans with a cute belt and some sparkly flats or some solid color wedges. Wear some eyeliner and mascara. And straighten or curl your hair so it's not a "frizz ball" as I like to call it. Girls don't need to work out to be feminine. I'm a cheerleader, and we do lots of conditioning. Like run 3 miles before practice. But I enjoy it. If you enjoy sports or working out, go do it! If not, eating right and gettig fiber will give you a nice shape.
EDIT: here's my routine for before school
-wake up and wash my face/brush my
-eat a healthy breakfast (fruits, meats, bread. nothing too sugary like donuts or pancakes/waffles with butter and syrup!)
-get dressed in something cute. I usually go for dark wash jeans from aero or American eagle (I trus their jeans to hold up unlike forever21's which are made really thin), a cute top that's either a cute cut (babydoll, v neck, sweater vest) or a shirt with a cute pattern. Some days out of the week I'll wear a cute dress with a belt and some leggings and ankle boots.
-put on my makeup. concealer, powder, eyeliner, mascara, and SOMETIMES eyeshadow. (if I don't wear eyeshadow I usually color on a sparkly or white colored crayon or powder over my eye so it still makes them pop.)
-do my hair. My hair is naturally really really curly and everyone loves it so I usually just apply de-frizzer and shine gel. Straighten on some days.
-go to school
-after school I go to cheer then come home and practice my cheers and jumps then take a shower and wash my face with acne wash (even though I don't have zits, I find it important to use acne wash to prevent zits!) shave my legs, shave my underarms, shave my ...., (lol)
-let my hair air dry curly (it stays overnight or else I straighten on the morning)
-go to bed with clean sheets, clean night clothes/pajamas.
Also wearing jewelry and perfume or body spritz is important. I carry around a purse with my phone, iPod, money, and a lot of makeup in it. Especially lip gloss and body spray so I always stay clean. Lol well this is long. Hope I could help!