I say don't do it. She already looks perfect. But, reports say she's considering doing it. 

According to the National Enquirer:

 "The 24-year-old Barbadianbeauty is out shopping for a plastic surgeon in Beverly Hills who will pump her up “at least one bra size,” a friend of the “Where Have You Been” singer tells The ENQUIRER.

“It’s horrifying seeing how much control Chris still has over her,” said the friend. “It’s like she’s hypnotized.'”