I am 18 years old, size 10 or 12, and 5'3". Nothing in the trendy juniors clothes ever fit me because designers seem to think all teenage girls are six feet tall and 90 pounds! I have found that stores like Fashion Bug, Fashion Gal (sometimes, their clothes run awfully small), Torrid, and Kohl's often have trendy clothes in Misses sizes that are higher quality than the juniors clothes and are designed for more fully developed figures. I don't know about fashion blogs though, sorry about that.
"You've got red on you." - Sean of the Dead