Victoria Beckham has said the whole family are "so happy and very excited" at the news she is expecting another baby.
The singer-turned-fashion designer has thanked her fans and celebrity followers on Twitter after thousands of messages flooded in.
The mum-of-three tweeted: "Thank u so much for your kind and beautiful messages!!! We are all so happy and very excited!!!!!!"
It is baby number four for David and Victoria, who announced they were expecting again on Sunday.
Kylie and Dannii Minougue both took to Twitter to say congratulations.
Dannii tweeted: "The divine Victoria Beckham has announced she is pregnant again. Congratulations to a wonderful mummy."
Amanda Holden, a regular Victoria Beckham dress wearer, also sent a message.
"Great news that the Beckham's are expecting their fourth child! Hope they get a pink one," the Britain's Got Talent judge said.
Meanwhile, thousands of fans posted messages on David's Facebook page.
Rumours are already rife that VB is expecting a baby girl, there is even speculation they will name her Paris.
After three boys, Victoria has hinted that she would like a daughter. In a recent interview the Spice Girl said: "We want at least one more baby and I'd love a girl. She could follow in my footsteps and be a singer. I'm sure Brooklyn will be playing football when he's older."