The boy band was formed on April 20, 1993.
The boy band also had a special Q&A at the Grammy Museum in Los Angeles on Monday.
ET talked to the group about the new 'Boy Band Con' documentary, which centers on their early manager, late mogul Lou Pearlman.
While 'Property Brothers' star, Drew Scott, was hoping his wife would be serenaded, McLean couldn't resist choosing his cute daughters!
Twain couldn't hide her excitement as she was pulled on stage by McLean at the Backstreet Boys' 'Larger Than Life' residency show.
The boy band and rapper collaborated for a fun new Super Bowl commercial.
The boy band also shares their first impressions of one another.
The pop star brothers have an adorable new niece!
The boy band will be releasing their tenth studio album on Jan. 25.
The five singers reflect on being together for 25 years, their ups and downs, and what they call their 'second chance.'
The Los Angeles D.A. has declined to press sexual assault charges against Nick Carter, citing the statute of limitations.
The singer and actor shared the devastating news on Twitter just hours before he was set to hit the stage in Peru on Monday.
The couple told ET that all they need now is to get the "Don't Go Breaking My Heart" singers to their wedding -- but there'll be endless Backstreet Boys music regardless!
Here's all the famous faces who can't get enough of the beloved game!
