In the immortal words of "Seinfeld's" George Costanza, Michael Phelps' boys can swim.

The Olympic swimmer and his fiancée Nicole Johnson revealed they're expecting a baby boy and the pregnancy is 12 weeks along. Phelps and Johnson have been dating since 2007, but they got engaged in February, according to TMZ.

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Phelps shared a photo on Instagram of himself with his arms wrapped around Johnson's waist and a caption that shared the happy news.

If his parent's genes are any indication, that will be one lucky baby.

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A photo posted by Michael Phelps (@m_phelps00) on Nov 18, 2015 at 8:02am PST

Phelps is of course the most decorated Olympian of all time with 22 swimming medals, 18 of which are gold. Johnson is no slouch either, as the model and beauty queen was crowned Miss California in 2010 and placed in the Top 10 in the Miss USA pageant that same year.

If his parents are any indication, their son is sure to have some tremendous athletic skills and good looks to boot. Perhaps gold medals and beauty pageant victories are in his future. After all, if Screech from "Saved by the Bell" can win a beauty pageant, anyone can.

The baby is expected in July, which is right when the 2016 Rio Olympics roll around.

Judging by the picture, Phelps and Johnson already have a speedo picked out for the kid, so he's already an aspiring star before even being born.

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