I used to teach a Fashion class at another school. Just wanted to suggest a few more activities your all girls after school class might like~ My students LOVED these activities:
---Fashion/Clothes
-Learn different fashion styles (Punk, Wedding, Casual, etc...)
-Paper Doll Activity (Get an outline of a girl and draw and cut out clothes and accessories for the girl.)
---Makeup
-Learn about different makeup materials and styles (Eye shadow, blush; smokey, colorful, Halloween, etc)
-Students partner up and draw each other's face using one of the makeup style they learned. (Didn't actually do this in my class. I just made up now. ^^; Just seems like a good alternative since my school was unusual and had the budget to buy all the materials to use real makeup in class. Also, I never liked the idea of all those kids using each other's makeup brushes and lipstick..........)
---Nail Art
-Learn different nail art materials and designs. (Nail polish, remover, stripes, polka dots, etc...)
-Get a worksheet of blank fingernails and draw nail art designs.
-Real nail art? (Maybe bring some nail polish from home or ask students to bring theirs from home and do each other's nails. Might be difficult to pull off without a budget but it would be awesome!)
---Designers/Fabrics
-Learn about different fabrics used for making clothes (Cotton, leather, etc.)
-Designing a T-shirt (Would require a budget for T-shirts and fabric markers....but it's an idea! ^^ All girls summer camp? Anyway, students can just draw their designs on a worksheet T-shirt~)