The former TOWIE star announced overnight that girlfriend Holli Willis is expecting their first child, a daughter.
Kirk was inundated with well wishes from friends and fans.
Today, he responded, saying: "Thanks to each and everyone that has congratulated me on becoming a dad! Your kind words mean a lot to me!!!"
Kirk and Holli dated several years ago, but rekindled their romance earlier this year, after he filmed Ex on the Beach.
He confirmed her pregnancy via social media yesterday, sharing a scan picture of their unborn child. Kirk said: "Everyone meet mine and Holli's little girl!!! Proudest moment of my life so far!"
Holli also has a daughter, Scarlett, from a previous relationship.
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