Anna Faris got a boob job right after her role in the House Bunny. She got the plastic surgery because she liked how it felt to be over the top sexy in the movie - she actually used a padded bra for the whole movie. The cool thing about Anna Faris is that she was funny before plastic surgery and still is after it. The only difference from before and after is that she went from cute to hot.
It was smart of Anna to approach her cosmetic surgery conservatively. Her breast size went from an A cup to a small C. The implants fit her frame very nicely and she doesn't have to where a padded bra anymore!
This is the final result of Anna Faris after plastic surgery.