Tokyo Mew Mew Vol 3

Tokyo Mew Mew by Mia Ikumi. A Shojo manga rated All Ages, published in English by Tokyopop.

On a date at the museum, Ichigo Momomiya is caught in a strange accident that fuses her DNA with that of a rare wildcat. Now she can transform into a cat-eared superhero, and she's recruited with four other girls to protect Earth from alien invaders.