Hollister Jean sizes...?

i have a pair of brown twill pants from hollister in size 3 that fit me great, they're a little baggy so i figure that a 3 in jeans should fit since they'll probably be a little tighter. I just ordered the threes for the jeans and i hope the fit! I'm 5'7, 120 lbs. 13 yrs old, and im a 0-2 in most jeans so i go up to a 3 for hollister pants, but do u think the jeans will fit??? i ordered them online and i really don't feel lik driving an hour to th mall to get a 5...