FRIENDS: THE REUNION episode aired today and made every fan super emotional. Jennifer Aniston (Rachel Green), Courteney Cox (Monica Geller), Lisa Kudrow (Phoebe Buffay), Matt LeBlanc (Joey Tribbiani), Matthew Perry (Chandler Bing) and David Schwimmer (Ross Geller) entered the same room 17 long years and it was as beautiful as it could be for fans all over the world. 

What made the special episode even better was cameos by super of our favorite FRIENDS guest stars. In addition to the original cast, the reunion featured a star-studded guest list including James Michael Tyler (Gunther), Elliott Gould (Jack Geller), Christina Pickles (Judy Geller), Tom Selleck (Richard), Maggie Wheeler (Janice), Larry Hankin (Mr. Heckles), Thomas Lennon (Joey's Hand Twin).  Making the reunion furthermore delightful, David Beckham, Justin Bieber, BTS, James Corden, Cindy Crawford, Cara Delevingne, Lady Gaga, Elliott Gould, Kit Harington, Mindy Kaling, Thomas Lennon, Christina Pickles, Reese Witherspoon and Malala Yousafzai also joined the special episode. 

A look back at the guest stars on FRIENDS: THE REUNION! 

LARRY HANKIN (MR. HECKLES)

Larry Hankin, who played the iconic role of Mr. Heckles, made an awesome appearance in the reunion episode, and honestly, it was the most unexpected. The actor, arrived in his character, wearing his famous bathrobe and cribbing about the noise and oh how can we forget his imaginary cat. 

TOM SELLECK (RICHARD)

Tom Selleck, who impressed us all with his gentleman-like role of Richard - Monica's (Courteney Cox) first serious boyfriend, appeared in the episode with the same charm. The actor arrived to ask about Chandler's designation in his first-ever job and guess what? No one knows about it. 

THOMAS LENNON (JOEY'S HAND TWIN)

One of the most intriguing and interesting characters on the show for a very limited screen time was Thoman Lennon, who played Joey's hand twin. In the reunion special, Matt Leblanc aka Joey was asked to recognize Thomas by his hands and he did a job well done. 

ELLIOTT GOULD (JACK GELLER) & CHRISTINA PICKLES (JUDY GELLER)

If there was someone Monica (Courteney Cox) was actually afraid of, it has to be her parents Jack and Judy Geller played wonderfully by Elliot Gould and Christina Pickles. Well, the episode wouldn't be complete without these two.

MICHAEL TYLER (GUNTHER)

For the longest time Michael Tyler, who played the epic role of Gunther in the show, was in love with Rachel (Jennifer Aniston) and his appearance in the reunion episode had to be there. Even though the actor could not be physically present for the shoot, he joined in virtually and it even more special. 

MAGGIE WHEELER (JANICE)

Well, we are talking about FRIENDS here so how can we not have Chandler's 'on & off' girlfriend Janice here? Maggie Wheeler aka Janice also made her 'OMG' appearance on the reunion episode and spilled the beans on how she was really nervous to act in front of Mathew Perry. Her appearance came at a time where we most needed it - while discussing the loudest laughter (Janice's laughter plays in the head, on loop). 

Well, could it be any more exciting? We don't think so!