Lots of women successfully breastfeed with twins, although it will take extra planning and a few more hands to support you. This is because both babies may want to be fed at the same time.
Most women think that they may not be able to produce enough milk; however, milk production is very much based on a supply and demand process. So the more your babies are suckling, the more milk you are likely to produce.
You have the option of fully breastfeeding with both babies latching on, or expressing your milk and alternating when each baby latches on. The expressed milk can be cup fed to your baby to minimise the risk of your baby taking to a bottle teat and possibly preferring this to the nipple.
Visit Tamba - the Twins and Multiple Births Association