The 19-month-old clearly had a good time at the Langhorne, Pennsylvania, theme park, meeting Elmo and his buddies, including Big Bird and Cookie Monster.
"Since we were in the area...we got the chance to make Isaiah's day!" the "Church Bells" singer captioned a photo of her little guy in front of the Sesame Street cast members. "Thanks, #sesameplace for the fun! We all had a blast!"
Even though all of the Sesame Street characters are pretty awesome, Isaiah holds a special place in his heart for Elmo, which may have grown even bigger after the red critter embraced the toddler in a huge hug.
"He's rolling with it. It's a learning experience for all of us," she shared at the Academy of Country Music Awards in April. "We're making up the rules and figuring things out as we go along, [but] it's good."