Brooks Koepka's wife brought a plus-one to the runway for her modeling gig on Thursday ... but it wasn't the star golfer -- she showed off her growing baby bump while rocking bikinis!!
Jena Sims was one of many beautiful ladies to walk in ONEONE's Miami Swim Week event ... and she stole the show as she put her tummy on display.
"Two hearts beating for @oneoneswim ud83dudc95," Sims said on Instagram. "Thank you for letting us ud83dude09 represent your amazing brand [Valentina Suescun.