Congratulations on the birth of your daughter. What a special time.
I don't have kids but if it were me, I would start by cutting out all junk food and highly processed food, you know, go back to basics, drink lots of water and eat fruit, vegies, brown rice, wholemeal breads and lean proteins, things that are nutritious - great for baby and you. And if you have the energy, a 30 min walk daily, or if its hard to get out the house, an exercise dvd - one for new Mums, that target those 'problem' areas.
Look forward to sharing your weightloss journey,