Edith Bowman has given birth to a baby boy.
The Radio 1 DJ and her partner, Editors frontman Tom Smith, welcomed their son, Rudy Brae Bowman Smith, at London's Portland Hospital.
Earlier in the year, Bowman admitted that a heart condition could put her life at risk during labour. Her child was born through a Caesarean section.
Radio 1 controller Andy Parfitt said: "Everyone at Radio 1 sends their love and best wishes to Edith and Tom."
Bowman began presenting the Radio 1 afternoon slot in 2003. She has also hosted Top Of The Pops, the BBC's Glastonbury coverage and appeared on Fame Academy.