hi there jess,good to see you,i have lost alott of weight with bellydance,
It does tone your tummy,the dancing i mean,as alott of the moves are around the tummy/hip area as well as the rest of your body,I personally do tribal style and find that gives me a great workout for my abs too.

you can add extra ab excercises to your routine if you want to,I dance each day,do callanetics twice a week for that extra strength to help me dance,they both compliment each other i find.