Koepka has been on fire since the pair got together – winning the US Open in 2017 and 2018 and the PGA Championship, also in 2018.
At 30, Sims is two years older than 28-year-old American Koepka.
They started dating in 2017 after Koepka split up with pro soccer player Becky Edwards.
However, there was a more than awkward moment on TV at the US Open in 2017 concerning the couple.
Fox Sport commentator Joe Buck incorrectly identified Koepka’s girlfriend as Edwards despite the two having broken up
Fortunately, co-commentator Brad Faxon was there to correct him. Faxon later revealed he knew about Koepka’s new girlfriend after the golfer told him in secret.
Sims is an American actress, model and beauty pageant titleholder. She previously held the Miss National Junior Teenager title and competed in the Miss Teen USA pageant in 2007.
There she represented Georgia but she did not place. It was the first time the representative from Georgia had not placed since 2003.
Her first film break was the lead role of Cassie in Attack of the 50 Foot Cheerleader.
She has since appeared in Last Vegas, Kill the Messenger, 3-Headed Shark Attack and American Beach House.
Sims describes herself as a ‘Krispy Kreme Connoisseur’ on Instagram, where she posts numerous sizzling pics of her toned figure.