I was asked to make a cake for a 15 year old girl who is into music and shopping. I have ideas for one ot the other, but I'd like to find a creative way to combine the two so that it blends. I don't want it to look like i just two different themes together.....

You can incorporate putting "CD's" of whatever music she likes/artist on cake along with shopping bags saying her favorite stores she likes to shop in with her favorite accessories , including a music store shopping bag with the CD's sticking out ..and can write: "girls just wanna have fun( that song)! NOt sure what else I can think of at this moment..sorry...hope this helps!