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Reese Witherspoon

Pablo/Stoianov/FameFlynet Pictures

When it comes to being pregnant, Reese Witherspoon is having a ball!

The Oscar winner was spotted at the Brentwood Country Club near her L.A. home on Wednesday making quite a racket (so to speak) as the soon-to-be mother of three got her game on by way of a tennis lesson.

Of course, the sight of the star looking to keep fit as she awaits the stork's arrival is certainly nothing new. She's often seen hiking and jogging with friends on a regular basis.

Witherspoon and husband Jim Toth are expecting their first child together. The 36-year-old actress already has two children from her previous marriage to Ryan Phillippe.