for my sister’s 14th birthday, I am getting her skinny jeans. she really wants skinny jeans that are red, pink, blue, purple, whatever.

She is a size 14 kids and is pretty skinny and petite.
She is 5′1” and weights probably about 85 to 87 pounds.
She got pink skinny jeans from forever 21 and they were a 27, and they were too big. (not by too much, but enough that she didn’t like them)

so, i am really confused by the sizes at Forever 21!!!
i really want to get her this pair, so what size would she be?

http://www.forever21.com/product.asp?catalog%5Fname=FOREVER21&category%5Fname=BTMs&product%5Fid=2057955066&showBACK=OK