These are Winx Club fashion dolls, specifically the characters Bloom (left) and Stella (right).

Both characters are fairies from the popular animated series Winx Club.

The doll on the left is Bloom, the main character and fairy of the Dragon Flame.

The doll on the right is Stella, the fairy of the sun, moon, and stars.

The dolls appear to be from the Jakks Pacific product line.