For those of you who are not aware, back in 1991 when Demi Moore was seven months pregnant with her son (fathered by Bruce Willis) she made a pose for Vanity Fair magazine. Since then, the pose has gone down in history as the pose that made pregnancy sexy.
So as you can see, I have wanted to draw Sally doing this pose for years. Especially since Sally's signature short hair was based on a hair style Demi Moore was using at the time.
So here she is sporting the same pose, but unlike Demi Moore, Sally is five months pregnant yet has a bigger belly. (due to carrying multiple babies fathered by Sonic the Hedgehog himself)