A 'Friends' reunion is finally happening

Then/Now: The cast of ‘Friends’

The cast and famous guest stars/

Finally!

Fans have been clamoring for a "Friends" reunion ever since the series finale aired in 2004, and now it's actually happening.

All six actors -- Jennifer Aniston, David Schwimmer, Courteney Cox, Matthew Perry, Lisa Kudrow and Matt LeBlanc -- will participate in a tribute broadcast honoring legendary TV director James Burrows, who helmed 15 "Friends" episodes throughout the show's 10-season run. NBC chairman Bob Greenblatt announced the news at the Television Critics Association press tour on Wednesday, but there's a catch.

READ: Jennifer Aniston Has a Morbid 'Friends' Reunion Idea 

"I'm hoping all six of them will be all in the same room at the same time, but I'm not sure if we can logistically pull that off," he told reporters, shortly after TVLine first reported the news.

WATCH: 'Friends' Ladies Reunite on 'Jimmy Kimmel Live' 

The special, produced by former "Will & Grace" star Sean Hayes, is set to air Feb. 21 on NBC, with several other iconic casts expected to reunite. Among them: "Will & Grace," "The Bob Newhart Show," "Laverne & Shirley," "Taxi," "Cheers," "Frasier," and "Mike & Molly."

Friends fans were treated to a brief, but super sweet, reunion moment between Phoebe Buffay and Joey Tribbiani (aka Kudrow and LeBlanc) on the 2015 Emmys red carpet in September.