Jessica Michibate Flaunts Her Baby Bump In Bikini Snaps

'I'm feeling bigger and bigger!' Jenson Button's pregnant ex Jessica Michibata flaunts her growing baby bump in skimpy bikini snaps... as she reveals she's struggling with heartburn....

She excitedly revealed in July that she's expecting her first child, a baby girl.

And Jensen Button's ex Jessica Michibata seemed to be relishing her pregnancy, as she showcased her blossoming baby bump in a series of glowing bikini snaps on Instagram.

The 32-year-old Japanese model, who hasn't revealed the father of her baby but stepped out holding hands with director Ken Kao earlier this month, also admitted she is struggling with acid reflux problems.

The brunette beauty proudly showed off her bump in a barely-there nude string bikini in a bathroom selfie on Tuesday.

She wrote: 'Feeling bigger and bigger day by day! Currently having some serious acid reflux. Anyone else struggling with it? #preggoprobs.'

But determined not to let her side-effects get her down, the model worked off her stress in the gym - sharing a selfie alongside which she wrote: 'Gym time pregnancy fitness.'

The stunning model has been taking it easy during her pregnancy with several sun-drenched trips abroad.

Sharing a snap with her dog Mochi on the beach, she looked radiant as she showed off her growing belly.