Bar Refaeli There's a Baby In Here, I Swear!

032516-bar-refaeli-instagramA shot of Bar Refaeli looking smokin' in a bikini isn't unusual, usually ... but in this pic she is, unbelievably, 5 months pregnant! 

Looking less bloated than most people after a footlong sub -- the supermodel posed in full profile to show off her baby bump ... which is really more pimple-like than anything.

Sunbathing Bar's caption? "My girl craved some Vitamin D."

We wanna see mom craving some double cheeseburgers! Check out Bar from 6 months ago when she was NOT prego ... not much difference.

She and Coco have all the luck.

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