Peaches has become a mum for the first time, after giving birth to a baby son, named Astala, this April.
She and Thomas announced their happy news through Twitter, with 23-year-old Peaches writing:
"Yes, its true IM A MUMMY!
"My little boy is the most beautiful thing in this world. When he holds @tomfromscums finger with his hand its the sweetest thing ever."
Geldof and Thomas got engaged in 2011 and announced they were expecting their first child together weeks later.