i have found that twin gestation may lead to more muscle separation (diastasis) compared to single gestation therefore, moms who have had twin pregnancy benefit greatly from the procedure - often with dramatic results. Make sure you see a board certified plastic surgeon for consultation. Best Wishes.
It all depends on your genetics. The best thing to do is wait until after you are done breast feeding and have gone back to either your normal weight or close to it and then see if your a tummy tuck candidate.