Take Me Out host Paddy and his wife Christine will be parents once again come September.
After being inundated with congratulations, he wrote: "Thank's for all the lovely messages. Himself & @MrsCMcGuinness are expecting McGuinty 3 in September."
Paddy, who appeared on Corrie as wilderness survival enthusiast Dougie Ryan last year, jokingly added: "Now where did I put that Calpol?"
Meanwhile, former Miss Liverpool Christine, who is five months pregnant, tweeted: "3 babies in 3 years!"
Paddy and Christine, who welcomed twins Leo and Penelope in summer 2013, married in June 2011 at Thornton Manor in Wirral.
The couple got engaged after TV presenter Paddy proposed on Christmas Day in 2009.
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