Hanson Brothers Baby: Middle Bro Taylor Welcomes Fifth Child Wilhelmina Jane

The Hanson clan just keeps on growing - welcome new baby girl Wilhelmina Jane! Taylor Hanson, middle brother of the popular sibling pop group Hanson, announced the arrival of his fifth child with wife Natalie on Tuesday. This totals nine Hanson brother offspring in all - both older and younger bros Isaac and Zac have two children of their own.

29-year-old Taylor, who sings as well as plays the keyboard, piano, guitar, and drums for the hit 1990s "MMMBop" band, released a public statement this week: "Natalie and I are thrilled to announce the arrival of our newest family member, Wilhelmina Jane Hanson. She arrived on Tuesday and was welcomed by more love than could fit in the room." The couple announced to fans back in July that they were expecting the arrival of a baby girl this fall.

According to Natalie, who wrote in a personal blog over the summer, the hardest part of the pregnancy for the couple was ultimately choosing a name:

"Thinking back on all the children's names has helped to give me a fresh perspective in choosing the name for the baby girl we are expecting in the fall."

It has helped to 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."

Wihelmina Jane joins a quartet of older siblings, all having unique and distinctive names of their own- Ezra, almost 10, Penelope, 7, River, 6, and Viggo, 3.

Hanson is currently working on their sixth studio album, set to be released in 2013. The brother trio just completed a world tour for their latest album "Shout It Out," finishing off with successful sold-out shows throughout Australia.

Congrats to the happy couple and their newest bundle of joy!