Tonight one of TV's most fashionable series comes to an end when Gossip Girl airs its final episode — check out pictures from the finale  now. We'll have to wait and see if Chuck and Blair finally walk down the aisle, what happens between Serena and Dan, and the identity of Gossip Girl, but until then, we're taking a look back at some of the cast's best snaps over the past five years.
We've got on-set kisses, to industry parties and red-carpet affairs. Click through to see Blake Lively , Leighton Meester , Penn Badgley , and the rest of the Upper East Siders before we bid them a final farewell!
Blake Lively  and Penn Badgley  shared an on-camera kiss in July 2008.
Penn Badgley , Ed Westwick , and Chace Crawford  joked around while celebrating the show's 100th episode in November 2011 in NYC.
Onscreen couple Leighton Meester  and Ed Westwick  posed for a photo at the 2008 Teen Choice Awards in LA.
Connor Paolo, Michelle Trachtenberg , Jessica Szohr , and a burger-eating Ed Westwick  joked around at a Lucky party held in NYC in May 2008.
Leighton Meester  and Ed Westwick  shared a well-dressed scene in August 2010.
Penn Badgley  and Blake Lively  cuddled close at the 2008 Teen Choice Awards in LA.
Ed Westwick  make a quick dash away from the beach during a June 2008 trip to NYC's Rockaway Beach.
Onscreen mother-daughter duo Kelly Rutherford and Blake Lively  posed for photos at an August 2009 event in New York.
Then real-life couple Penn Badgley  and Blake Lively  walked to the set in August 2009.
Sharing a laugh while cameras were rolling, Leighton Meester  and Blake Lively  filmed on location in Port Washington, NY, in June 2008.
Ed Westwick  found himself surrounded by his lovely costars Taylor Momsen  and Leighton Meester  during a July 2007 party thrown by the CW in LA.
Kelly Rutherford joked around with her Gossip Girl costars at the show's season two premiere held in August 2008 in NYC.
Blake Lively  hopped into a taxi in Manhattan while shooting a scene in October 2011.
Leighton Meester  modeled a white wedding  dress during a November 2011 shoot of a pivotal scene.
Leighton Meester  joked around with Ed Westwick  in December 2009.
The entire cast happily accepted a 2008 Teen Choice Award in LA.
Chace Crawford , Penn Badgley , and Ed Westwick  dropped by NYC's TRL studios in December 2007.
Penn Badgley  escorted Blake Lively  to the October 2009 Angel Ball held at Cipriani in NYC.
Blake Lively  flashed a smile on set in September 2011.
Blake Lively  held onto her constant companion, Penny, leaving the set with Penn Badgley  in November 2011.
Blake Lively  hit the red carpet solo for the show's 100th episode celebration in November 2011.
Chace Crawford  and Ed Westwick  traveled to Miami for DirecTV's February 2009 Celebrity Beach Bowl.
Blake Lively  and Penn Badgley  stepped out together for NYC's May 2008 Met Gala.
Blake Lively  and Leighton Meester  shared a laugh while shooting on location in Paris in July 2008.
Despite wearing a disguise, Leighton Meester  sported a bright smile that gave her away during a March 2008 shoot in NYC.
Ed Westwick , Leighton Meester , Michelle Trachtenberg  and Jessica Szohr  attended a party at NYC's Henri Bendel in January 2010.
Ed Westwick  and Jessica Szohr  attended a Lakers vs. Knicks game at Madison Square Garden in February 2008.
Leighton Meester  and Chace Crawford  were all smiles on the set in November 2007.
Ed Westwick  and Chace Crawford  attended a May 2007 party thrown in NYC by The CW.
Blake Lively  shared a hug with Kelly Rutherford in October 2011.
Leighton Meester  cracked a smile during a stroll down a Manhattan street with costar Ed Westwick  in June 2009.
The entire cast of Gossip Girl stepped out for their September 2007 premiere party in NYC.
Blake Lively  and Chace Crawford  took their marks on set in July 2012.
Dressed to impress, Queen Bee and her sidekick S — Leighton Meester  and Blake Lively  — stepped out in dramatic gowns for a September 2010 scene.
Blake Lively  wore a dramatic black peplum top and bright smile, while shooting on location in NYC in August 2010.
Real-life couple Jessica Szohr  and Ed Westwick  partied at a NYC event thrown by MAC in July 2009.
Blake Lively  and Leighton Meester  let loose during a visit to MTV's TRL in October 2007.
Ed Westwick , Chace Crawford , Blake Lively , and Penn Badgley  wore their sunglasses at night during a December 2008 event thrown in NYC.
Jessica Szohr  hung out with pals Blake Lively  and Penn Badgley  at the opening party for Juicy Couture's Fifth Avenue flagship store in November 2008.
Blake Lively  and Penn Badgley  were spotted leaving a NYC event together in November 2009.
Blake Lively  and Penn Badgley  took a break from the set to see Shrek the Musical on Broadway in May 2009.
On-again, off-again onscreen couple Kelly Rutherford and Matthew Settle posed for photos at the show's September 2007 launch party in NYC.
Blake Lively  and Penn Badgley  buddied up at DirecTV's third annual Celebrity Beach Bowl held in St. Petersburg, FL, in January 2009.
Onscreen Humphrey family — Matthew Settle, Taylor Momsen , and Penn Badgley  — shared a scene in March 2009.
During a break from production, Chace Crawford  and Ed Westwick  grabbed a bite to eat in March 2008.
Matthew Settle showed off his bulging biceps while walking to the set in August 2009.
Leighton Meester  shot a solo scene in August 2012.
Gossip Girl costars Kelly Rutherford and Matthew Settle snapped a photo arriving at the show's 100th episode celebration in November 2011.
Chace Crawford  and Ed Westwick  shared a laugh backstage at the 2008 Teen Choice Awards in LA.
Ed Westwick  shared a secret with Jessica Szohr  at LA's Art of Elysium's third annual Black-Tie Charity Gala in January 2010.
The cast posed for a photo at a CW party in May 2007.
Blake Lively  snuggled with her best friend Penny and chatted with Chace Crawford  on set in October 2009.
Penn Badgley 's Dan Humphrey came to the rescue of Blair Waldorf, played by Leighton Meester , in February 2012.
Ed Westwick  and Chace Crawford  posed for a photo in May 2007.
The cast hung out away from the set in July 2009.
Penn Badgley  and Leighton Meester  were excited to drop by TRL in May 2008.
Blake Lively  addressed an audience on entertainment reports in LA during a July 2007 TCA event.
Ed Westwick  and Chace Crawford  hung out with Emma Roberts at a NYC party thrown by T-Mobile in October 2011.
Onscreen family members Serena van der Woodsen and Lily Bass, played by Blake Lively  and Kelly Rutherford, took a very fashionable stroll through Manhattan in August 2008.
The Gossip boys posed together during a July 2007 CW event.
Ed Westwick  and Jessica Szohr  were spotted leaving the May 2009 Met Gala in high spirits.
The cast joined NYC Mayor Michael Bloomberg at a special event marking the show's 100th episode in January 2012.
Leighton Meester  and Blake Lively , also known as B and S, chatted during a scene in July 2009.
Leighton Meester , Ed Westwick , and Jessica Szohr  posed for photos at a Gossip Girl press conference held in NYC in October 2008.
Penn Badgley  and Leighton Meester  were spotted cracking up on the set in November 2007.
The cast chatted with press during a 2009 CW network presentation held in NYC in May 2009.
Real-life loves Jessica Szohr  and Ed Westwick  at an October 2009 Rag & Bone event held in LA.
Blake Lively , Leighton Meester , and Taylor Momsen  smiled for photographers at a PaleyFest event in March 2008.
Ed Westwick  and Jessica Szohr  suited up for a celebrity flag football event held in Miami in February 2010.
Blake Lively  and Leighton Meester  ran through lines together in July 2009.
Ed Westwick  and Chace Crawford  stopped by a US Open event in August 2007.
Pals Leighton Meester  and Penn Badgley  shared a photo at a CW party in May 2007.
Blake Lively  and Penn Badgley  shared a kiss on set in July 2008.
Ed Westwick  and Leighton Meester  put on their brightest smiles, and coats, for the cameras in March 2009.