family photos

We're taking professional family photos in 9 days and I'm freaking bc I haven't lost all the baby weight and I don't want to look bad!  My baby is 6 months and we have three other kids ages 7-12.  Any suggestions for posing to make me look skinny?  I know I sound superficial, but I don't want to be too dissapointed with the photos since we are paying quite a bit for them.