Celebrity Stay-at-Home Moms

I've no plans of making this blog into a celebrity-watching venue, but since this recently came into the news...

Katie Holmes is bowing out of a Dennis Quaid film and intends to be a stay-at-home mom once her baby arrives. Julia Roberts has been lying low, with only the occasional public appearance, since the birth of her twins.

I wonder how many celebrity SAHMs there are. How many eventually revive their careers? Well, these folks can certainly afford not working for a while, more than the average mom can. But I just wonder...