Peaches Geldof and her fiance Thomas Cohen just welcomed a baby boy.

Both parents tweeted their welcome to their son Astala Dylan Willow Cohen-Geldof.

“Yes, its true- I’M A MUMMY!!!!” the new mom wrote. “My little boy is the most beautiful thing in this world. When he holds @tomfromscum’s finger with his hand its the sweetest thing ever. X”

Cohen also wrote, “im a dad he is the most perfect thing ever so proud of his beautiful mum @peaches_g and overcome with joy x”

This is the first baby for the couple.

Congratulations!