Several of Charlie’s former co-stars wrote their congratulations under the picture.
Actress Cassie Howarth wrote: “Ahhhhh!!!!!!! So much love to all three of you!!!!!”
Meanwhile, Georgia Parker, who stars as Roo Stewart, added: “She's beautiful Charlie. Much love to you!”
The Bachelor host Osher Gunsberg also sent his best wishes: “This is the greatest. Love you both with all of our love x.”
Charlie and his director wife, Gemma, have been together for 16 years, tying the knot during a spontaneous trip to America in 2015.