If a mum hates how her body looks after a pregnancy, would you advise her to go for liposuction?

Honestly speaking, getting under the knife is never really a good idea, unless it is endangering your life. That your body changes after pregnancy, is a known fact. But it's not like you can't get that body back. My suggestion is to try exercising, eating right and caring for your body regularly, as opposed to putting it under unnecessary duress of another big procedure. As easy as liposuction sounds, it takes time to recover and what if you decide to have another baby! Money down the drain. However, if you still feel you are not going to have another kid and want that body back, please consult and research well before you go for the procedure.