Isaac Hanson, 25, the oldest member of the group famed for the 1997 hit "MMMBop," wed his 22-year-old girlfriend, Nicole Dufresne, in his Tulsa, Okla., hometown on Saturday, the magazine said on its Web site.

The nuptials came just weeks after middle brother Taylor Hanson, 23, and his wife of four years had their third child. The youngest of the group, Zachary, 20, tied the knot in June.

With their clean-cut looks and catchy pop tunes, Hanson quickly became the toast of screaming teenage girls everywhere, inadvertently paving the way for boy bands like 'N Sync and Backstreet Boys. But Hanson, who wrote and played their own material, saw their popularity wane as they confounded their impressionable fans by experimenting with different musical styles.

Now recording as independent artists, they are preparing to release their fourth album, as well as a documentary called "Strong Enough to Break," which will have its world premiere at the Hollywood Film Festival in Los Angeles later this month.