Tristan Thompson's Ex Shares First Photo of Their Son Prince

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Khloe Kardashian's NBA basketball star boyfriend's first child is celebrating his first birthday!

Tristan Thompson's baby boy is celebrating a big milestone!

A year ago, the NBA basketball pro, who's currently expecting a child with Khloe Kardashian, welcomed a son, Prince, with ex-girlfriend, Jordan Craig, who shared the first photo of the little guy to her Instagram on Tuesday.

"#MemoriesWithYou," the Instagram model captioned the sweet photo, rocking a swimsuit, playing in the pool with Prince.

Jordan and Tristan had split by the time their child was born. The basketball star went public with Khloé in September of 2016, and ET learned of their pregnancy a year later. Their baby is likely due sometime early next year.

Happy birthday, Prince Oliver!

Meanwhile, in a teaser Wednesday for what's still to come this season on Keeping Up With the Kardashians, it's hinted that Khloé is about ready to officially announce her pregnancy.

The midseason finale of Keeping Up With the Kardashians airs Sunday at 9 p.m. ET/PT on E!, and returns with all-new episodes beginning Sunday, Jan. 7, airing at the same time.