Reese Witherspoon polka dot pregnant flip flops sunglasses

A chipper Reese Witherspoon was spotted (literally!) running errands in Santa Monica on Tuesday, and we can't believe how big the Oscar winner is getting!

Reese still hasn't officially announced that she's expecting her third child (this will be her first with husband Jim Toth), so it looks like she really is going to pull a Jennifer Lopez on us and wait until she's on the delivery table to confirm her pregnancy.

In between her parents' legal drama and her upcoming film roles (Reese is set to begin work on three movies in 2013: Wish List, Big Eyes and Devil's Knot), we're not sure how she gets everything done -- and with a smile on her face, no less!