Bethany Hamilton sure knows how to defy pregnancy.
The pro suffer was strolling a beach in Hawaii Saturday in tip top shape ... super impressive given that she's 7 months pregnant.
This will be Bethany and hubby Adam Dirks' second kid. They have a 2-year-old son named Tobias.
BTW ... the pregnancy has not cramped Bethany's style ... she was surfing at 6 months.