What to buy a teenage girl for her birthday or Christmas? Let us help you with room decor ideas, funny gifts to make her laugh, a beauty gift set, and the must-have gadget and trendy accessories.

See the dreamy, flower-filled space that Vivi can grow into When Sarah Foster's daughter Valentina told her mom she was "ready for a big girl room," the ... a swing in her bedroom," Foster says.

A neon sign can transform a teen girl's bedroom. How cute is this neon sign. Obviously the bigger you go the more expensive it'll be but the verified reviews on Etsy look very positive.