Pregnant Katherine Schwarzenegger dressed in black during a stroll with her dog

Katherine Schwarzenegger looked fit as a fiddle on Tuesday, dressed in exercise maternity clothes while out with a friend to walk her dog in Santa Monica, California.

The 30-year-old daughter former ‘governator’ Arnold Schwarzenegger wore an oversized black athletic top for the outing, which featured a zipper collar which Katherine left open to show her collarbone.

She's expecting her first child with her husband, Chris Pratt.

The wife of Chris Pratt was pictured with her friend.