By Breaking Celebrity News Staff

Reese Witherspoon knows how to cause a racket.

The Oscar winning star -- pregnant with her first child with new hubby Jim Toth -- hit the tennis courts Wednesday at the Brentwood Country Club near her home in Los Angeles.

Unlike Jessica Simpson who shocking gained a lot of weight during her pregnancy, the 36-year-old Legally Blonde actress appears determined to stay in good shape during her pregnancy; she’s been repeatedly photographed jogging and hiking in the past few weeks.

This will actually be the third child for the 36-year-old actress; she also has two children with ex-husband Ryan Philippe.

Of course, there’s nothing like a little exercise to work off stress.

As Breaking Celebrity News has previously reported, on May 11, Witherspoon and her parents, Mary Elizabeth "Betty" Witherspoon and Dr. John Witherspoon went to a Tennessee courtroom for an emergency hearing on her father's bizarre bigamy case.