Sophie Ellis-Bextor topped the charts with Spiller in 2000
Pop singer Sophie Ellis-Bextor has given birth to a baby son nine weeks ahead of his due date.
Her second child, who has been named Kit Valentine, weighed in at 2lb 10oz (1.19 kg). Mother and baby are said to be "doing well".
Ellis-Bextor, who has a four-year-old boy called Sonny with husband Richard Jones, guitarist with The Feeling, had pre-eclampsia in her first pregnancy.
Her mother, ex-Blue Peter host Janet Ellis, said they were progressing well.
The 29-year-old's spokeswoman would not confirm whether Ellis- Bextor had suffered from pre-eclampsia again but the condition can be treated by inducing an early delivery.
On her website blog, Ellis-Bextor said that she was undergoing regular scans during her second pregnancy.
The singer has scored six solo top 10 hits during her career, including Murder On The Dancefloor.
She also topped the charts with dance act Spiller in August 2000 with the song Groovejet (If It Ain't Love).