Macaulay Culkin is spilling the beans on his longtime partner Brenda Song’s fangirl moment during the Backstreet Boys’ latest show in Las Vegas.
The boy band, which features AJ McLean, Brian Littrell, Howie Dorough, Kevin Richardson and Nick Carter, kicked off the Into the Millennium residency at the Sphere on July 11 and performed their eighth and ninth show over the weekend.
The Home Alone star and Song, 37, attended the Saturday, July 26, show clad in the perfect all-white Millennium looks.
The couple were lucky enough to strike a pose alongside the boy band, which Culkin showed off in his Monday, July 28, post on Instagram.
"Mack Street’s Back, ALRIGHT!!!" he began the caption of his social media post, teasing, "Hey y’all, remember the ‘90s? Just went to the @backstreetboys at @thespere this Saturday and Brenda lost her sh*t. (She literally cried)."
The former child actor raved over the boy band’s electrifying performance, writing, "I was mildly skeptical about the show, but boy howdy did they tear the place down. I was so very impressed." He also lauded their on-stage stamina in a humorous way.
"Even if you’re not a fan you have to see this; it’ll win you over… in the Brenda kind of way," he added referring to the The Suite Life of Zack & Cody actress’ fangirl moment during which she moved to tears mid-show.
"Thanks @backstreetboys for making Brenda cry. I try every night and nothing seems to work," he concluded.
Culkin and Song were joined by a group of friends at the Las Vegas Sphere, which they visited as part of actress Billie Lourd’s 33rd birthday celebration.
