Go to a mall and check out the women's clothing stores. You won't find many men in there to ruin your game, plus (since it's a mall) if you choke you can always bail to a more manly store. Once you're in the the women's stores you can use some type of opener by grabbing a article of clothing or jewelry and asking a girls advice saying "I'm trying to find a gift for my sister (mom, niece, cousin, or whoever you want to say). What's your opinion on this?" Most of the time they'll start asking you questions like "What's her size?" or "What does she usually wear?" and you just let things progress from there . . .
~Cali
P.S. It's not all "brothers" on here . . . we got some "sisters" too! LOL!