Taylor Hanson and his wife have welcomed a new baby girl.

The 29-year-old singer - who already has three sons and a daughter with wife of eight years Natalie - has announced the arrival of their daughter Wilhelmina Jane.

He told People.com: ''Natalie and I are thrilled to announce the arrival of our newest family member, Wilhelmina Jane Hanson. She arrived on Tuesday, October 2, and was welcomed by more love than could fit in the room.''

The proud parents turned to the readers of the unique baby names website Nameberry.com for help choosing her name.

Natalie told USMagazine.com: ''Thinking back on all the children's names has helped give me a fresh perspective in choosing the name for the baby girl we are expecting in the fall,'' she wrote. ''It has helped remind me how the right name seems to come at the right time, and how, no matter how 'perfect' the choice, it will only be a part of all this little person will become.''

The couple married in June 2002 and are already parents to Ezra, 9, Penelope, 7, River, 6, and Viggo, 3.

Taylor previously revealed his excitement about their expending family.

He said: ''Natalie and I are so anxious to meet our fifth mini-Hanson. As are the four siblings at home who are counting the days to the arrival.''

The 'MMMBop' hitmaker admitted he and Natalie always wanted a big family, because once you have three children ''you're outnumbered'' anyway.

He said: ''After two kids, you're outnumbered. So once you cross having three, having [more] is not such a big deal.''