The happy couple relived its 2003 wedding day by walking down the aisle again in Hawaii, but this time there were two extra special guests - their kids Satyana and Keeva.
After renewing their vows at sunrise on 30 September (13), the actors and their family were caught on camera enjoying a golf cart ride back to their hotel to continue celebrations.
The second ceremony came after Denisof proposed to the How I Met Your Mother star again over the summer (13).
Detailing her glee to her Twitter.com fans, Hannigan wrote, "My hubby Alexis Denisof surprised me with the most romantic day of my life yesterday! Which included another proposal & ring! I said Yes!"
"And now we get to have our kids at this ceremony. It'll be shorter. We'll get to the cake sooner! Yay renewal!!!"