Jul 11, 2008, 4:00 GMT
Isaac Hanson and wife Nikki had a baby boy on July 1, it has been confirmed.
08/13/2007 - Isaac Hanson - Los Angeles Premiere of "SUPERBAD" - Grauman's Chinese Theatre - Hollywood, CA © Chris Hatcher / PR Photos
The 'MMMBop' singer and his spouse - who have a one-year-old son Clark Everett - welcomed their second child, James Monroe Hanson, who weighed 8lb 11oz, in their hometown of Tulsa last week.
Isaac - who refers to both his sons by their middle names - said: "The addition of Monroe to our family is incredible and exciting. With Monroe and Everett being so close in age, it will be great to watch them grow up together. Two little boys is going to be twice the fun!"
Last October, the 27-year-old singer - the oldest member of boyband Hanson - was diagnosed with pulmonary embolism, a blockage of an artery that can stop blood supply to the lungs, after he was rushed to hospital complaining of severe chest pains.
In December, Isaac had rib resection surgery following the embolism. He has been healthy since January.
Hanson - which was made up of Isaac and his brothers Taylor and Zac - first shot to fame in 1997 with their worldwide smash hit single 'MMMBop'.
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