The 32-year-old former S Club 7 singer and her husband Alex Bourne welcomed their daughter Amelie on Tuesday morning at London's Portland Hospital.
Stevens's publicist annonced: "Rachel Stevens and Alex Bourne are delighted to announce the birth of their daughter Amelie. She arrived at 2.05am; mother and baby are both doing really well."
The couple tied the knot a ceremony held at Claridge's in London last summer.
