By Annie Reuter

(RADIO.COM) – *NSYNC have reunited, if only for one night. Yesterday (August 8) the former superstar boy band met up to celebrate member JC Chasez’s 40th birthday.

Justin Timberlake posted a picture of the reunion with his former band mates Lance Bass, Joey Fatone, Chris Kirkpatrick and Chasez, early this morning and let fans know it was a major milestone for his friend.

“JC’s 40th… And, if you don’t know now, you know…,” Timberlake wrote in an Instagram caption.

Earlier in the day, Kirkpatrick also wished Chasez a happy birthday with a throwback photo of the band during a red carpet interview.

“Happy birthday @JCChasez! Welcome to the old man club!” he wrote.

While other boy bands from *NSYNC’s era, including the Backstreet Boys and 98 Degrees, have gotten back together to tour and release new music, *NSYNC have only reunited once. That happened in 2013 at the MTV VMA’s for 90 seconds during Timberlake’s MTV VMA Video Vanguard Performance.

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