Best friends! Jennifer Aniston's maid of honor revealed

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Jennifer Aniston and Justin Theroux Are Married!

"I'll be there for you like I've been there before."

The Friends theme song lyrics are definitely in our heads with the news that Courteney Cox was reportedly there as the maid of honor for longtime pal Jennifer Aniston at her wedding to Justin Theroux on Wednesday at the couple's Bel Air, California home, according to People.

What's more, a source told ET that Cox was also the last guest to leave.

Tracking Jennifer Aniston's relationships from over the years:

35 PHOTOS
Jennifer Aniston and her relationships through the years
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Best friends! Jennifer Aniston's maid of honor revealed
Promotional portrait of American actor Jennifer Aniston for the television series, 'Friends,' c. 1995. (photo by NBC Television/Getty Images)
Photo by: Peter Kramer. Courtney Cox and Jennifer Aniston at the 75th Anniversary of NBC. (NYC) (Star Max via AP Images)
Brad Pitt and Jennifer Aniston at the premiere of 'The Mexican' at the National Theater in Los Angeles, Ca. 2/23/01. (Photo by Kevin Winter/Getty Images).
Jennifer Aniston, of television's "Friends," accepts her award for favorite female television performer at the 27th Annual People's Choice Awards in Pasadena, Calif., Sunday, Jan. 7, 2001. (AP Photo/Mark Terrill)
Brad Pitt and Jennifer Aniston at the premiere of 'Rock Star' at the Mann Village Theater in Los Angeles, Ca. 9/4/01. Photo by Kevin Winter/Getty Images.
Brad Pitt, left, and Jennifer Aniston arrive at the premiere of the film "Full Frontal," Tuesday, July 23, 2002, in Beverly Hills, Calif. (AP Photo/Rene Macura)
Jennifer Aniston, one of the stars of the new film "Along Came Polly," looks back for photographers at the premiere of the film at Grauman's Chinese Theater in the Hollywood section of Los Angeles, Monday, Jan. 12, 2004. (AP Photo/Chris Pizzello)
Actress Jennifer Aniston arrives for the premiere of "Derailed" Sunday, Oct. 30, 2005 in New York. (AP Photo/Stephen Chernin)
In this May 13, 2004 file photo, Brad Pitt, left, arrives with his Jennifer Aniston at the screening of his film "Troy," at the 57th International Film Festival in Cannes, southern France. (AP Photo/Patrick Gardin, file)
Jennifer Aniston arrives on stage to make the Oscar presentation for achievement in costume design at the 78th Academy Awards Sunday, March 5, 2006, in Los Angeles. (AP Photo/Mark J. Terrill)
U.S. actress Jennifer Aniston, left, sits with an unidentified companion while watching a men's finals match between Spain's Rafael Nadal and Switzerland's Roger Federer during the French Open tennis tournament at the Roland Garros stadium in Paris, Sunday June 11, 2006. (AP Photo/Michel Spingler)
**FILE**Actresses Courteney Cox Arquette, left, and Jennifer Aniston, of the television series "Friends," arrive at the 9th annual Screen Actors Guild awards in Los Angeles, in this file photo from March 9, 2003. Aniston guest stars in the season finale of Cox's new FX Networks show "Dirt," the network said. She plays Tina Harrod, a rival magazine editor of Cox's ruthless tabloid queen, Lucy Spiller. (AP Photo/Chris Pizzello-File)
Jennifer Aniston, left, and Courteney Cox pose together at the premiere of "The Tripper" in Los Angeles on Wednesday, April 11, 2007. The film was written and directed by David Arquette. (AP Photo/Matt Sayles)
Actress Jennifer Aniston accepts the Vanguard award at the 18th annual GLAAD Media Awards at the Kodak Theatre in Los Angeles, Saturday, April 14, 2007. (AP Photo/Chris Carlson)
Actress Jennifer Aniston, left, and actor Owen Wilson pose on the press line at the premiere of the feature film "Marley & Me" in Los Angeles on Thursday, Dec. 11, 2008. (AP Photo/Dan Steinberg)
U.S. actress Jennifer Aniston, right, waves as she poses with U.S. actor Owen Wilson prior to a photo call to present their movie "Marley and Me", in Rome, Friday, 27, 2009. The film opens across Italy on April 3. (AP Photo/Andrew Medichini)
U.S. actress Jennifer Aniston reacts during the television show "Wetten Dass..?" (Bet it..?) in the western German city of Duesseldorf, Saturday Feb. 28, 2009. (AP Photo/Ina Fassbender, Pool)
Jennifer Aniston, left, and John Mayer arrive at the 81st Academy Awards Sunday, Feb. 22, 2009, in the Hollywood section of Los Angeles. (AP Photo/Chris Carlson)
Jennifer Aniston arrives at the Women in Film Crystal Lucy Awards on Friday June 12, 2009, in Los Angeles. (AP Photo/Matt Sayles)
Cast member Jennifer Aniston arrives at the premiere of "Love Happens" in Los Angeles on Tuesday, Sept. 15, 2009. (AP Photo/Matt Sayles)
Gerard Butler and Jennifer Aniston arrive to the premiere of "The Bounty Hunter" at The Ziegfeld Theater in New York, on Tuesday, March 16, 2010. (AP Photo/Peter Kramer)
Jennifer Aniston is photographed backstage at the 67th Annual Golden Globe Awards on Sunday, Jan. 17, 2010, in Beverly Hills, Calif. (AP Photo/Mark J. Terrill)
Actress Jennifer Aniston makes an appearance at Sephora to promote her new fragrance 'Jennifer Aniston' on Thursday, May 5, 2011 in New York. (AP Photo/Peter Kramer)
Jennifer Aniston accepts the award for decade of hotness at the Spike TV Guys Choice Awards on Saturday, June 4, 2011, in Culver City, Calif. (AP Photo/Matt Sayles)
ARCHIV: Jennifer Aniston, a cast member in "Horrible Bosses," is interviewed at the premiere of the film, Thursday in Los Angeles (Foto vom 30.06.11). Aniston hat in jungen Jahren allerhand Jobs angenommen. Der schwierigste davon sei der als Fahrradkurier in New York gewesen, erzaehlte die 42-jaehrige der "Berliner Zeitung" (Freitagausgabe vom 02.09.11). (zu dapd-Text) Foto: Chris Pizzello/AP/dapd
Jennifer Aniston attends the premiere of "Just Go With It" at The Ziegfeld Theater, in New York on Tuesday, Feb. 8, 2011. (AP Photo/Peter Kramer)
Actress Jennifer Aniston poses atop her new star on the Hollywood Walk of Fame in Los Angeles, Wednesday, Feb. 22, 2012. (AP Photo/Chris Pizzello)
Justin Theroux and Jennifer Aniston attend the American Cinematheque 26th Annual Award Presentation To Ben Stiller 2012 at The Beverly Hilton Hotel on Thursday November 15, 2012 in Beverly Hills, California. (Photo by Todd Williamson/Invision/AP Images)
Justin Theroux, left, and Jennifer Aniston arrive at the Oscars at the Dolby Theatre on Sunday Feb. 24, 2013, in Los Angeles. (Photo by John Shearer/Invision/AP)
Jennifer Aniston arrives at the world premiere of "Call Me Crazy: A Five Film" at the Pacific Design Center on Tuesday, April 16, 2013 in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
LOS ANGELES, CA - JANUARY 25: Actress Jennifer Aniston attends the 21st Annual Screen Actors Guild Awards at The Shrine Auditorium on January 25, 2015 in Los Angeles,California. (Photo by Frazer Harrison/Getty Images)
SANTA BARBARA, CA - JANUARY 30: Actress Jennifer Aniston attends the Montecito Award honoring Jennifer Aniston at the Arlington Theater at the 30th Santa Barbara International Film Festival on January 30, 2015 in Santa Barbara, California. (Photo by Mark Davis/Getty Images for The Santa Barbara International Film Festival)
HOLLYWOOD, CA - FEBRUARY 22: Jennifer Aniston and Emma Stone attend the 87th Annual Academy Awards at Hollywood & Highland Center on February 22, 2015 in Hollywood, California. (Photo by Jason Merritt/Getty Images)
Jennifer Aniston and Justin Theroux arrive to the 2015 Vanity Fair Oscar Party in Beverly Hills, California on February 22, 2015. AFP PHOTO/ADRIAN SANCHEZ-GONZALEZ (Photo credit should read ADRIAN SANCHEZ-GONZALEZ/AFP/Getty Images)
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Cox and Aniston have remained close friends since they first starred as Monica and Rachel on Friends in 1994. Aniston is the godmother to Cox's daughter Coco, 11, and Cox even got engaged to Snow Patrol's Johnny McDaid at Aniston's home last June.

WATCH: Inside Jennifer Aniston and Justin Theroux's Wedding: The Guests, the Secret Performance & More

In February, Aniston spoke about their friendship to More magazine. "She's extremely fair, ridiculously loyal and fiercely loving," the 46-year-old actress said. "She's been there for me through thick and thin."

As for Theroux's best man, he reportedly chose his friend Scott Campbell, a tattoo artist and husband of actress Lake Bell. Pal Jimmy Kimmel was also part of the festivities as he reportedly threw The Leftovers star his Bachelor party on Monday at a barn Kimmel built next to his house.

Photos of Jennifer Aniston from throughout her career:

52 PHOTOS
jennifer aniston - updated 1/22/15
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Best friends! Jennifer Aniston's maid of honor revealed
HOLLYWOOD, CA - FEBRUARY 22: Actress Jennifer Aniston attends the 87th Annual Academy Awards at Hollywood & Highland Center on February 22, 2015 in Hollywood, California. (Photo by Jason Merritt/Getty Images)
Jennifer Aniston arrives at the 20th annual Critics' Choice Movie Awards at the Hollywood Palladium on Thursday, Jan. 15, 2015, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
FILE - In this Wednesday, Jan. 14, 2015 file photo, Jennifer Aniston, a cast member in "Cake," poses at the premiere of the film at Arclight Cinemas in Los Angeles. At long last, many critics saw Aniston fulfill potential first revealed in 2002's art-house hit "The Good Girl" in an even darker, more daring role in the drama "Cake," in which she plays a drug-addicted woman in chronic physical and emotional pain. (Photo by Chris Pizzello/Invision/AP, File )
Jennifer Aniston, a cast member in "Cake," poses at the premiere of the film at Arclight Cinemas on Wednesday, Jan. 14, 2015, in Los Angeles. (Photo by Chris Pizzello/Invision/AP )
Jennifer Aniston arrives at the 16th annual InStyle and Warner Bros. Golden Globes afterparty at the Beverly Hilton Hotel on Sunday, Jan. 11, 2015, in Beverly Hills, Calif. (Photo by Matt Sayles/Invision/AP)
Jennifer Aniston seen at the Los Angeles Premiere of New Line Cinema's "Horrible Bosses 2" on Thursday, Nov 20th, 2014, in Los Angeles. (Photo by Eric Charbonneau/Invision for Warner Bros./AP Images)
Jennifer Aniston seen at the Los Angeles Premiere of New Line Cinema's "Horrible Bosses 2" on Thursday, Nov 20th, 2014, in Los Angeles. (Photo by Eric Charbonneau/Invision for Warner Bros./AP Images)
Actress Jennifer Aniston attends a special screening of "Cake", hosted by the Cinema Society, Instyle and Grey Goose, at the Tribeca Grand Hotel on Sunday, Nov. 16, 2014, in New York. (Photo by Evan Agostini/Invision/AP)
U.S actress Jennifer Aniston poses for photographers at a photo call for Horrible Bosses 2 at a central London venue, London, Thursday, Nov. 13, 2014. (Photo by Jonathan Short/Invision/AP)
Jennifer Aniston arrives at the 6th annual Governors Awards at the Hollywood and Highland Center on Saturday, Nov. 8, 2014 in Los Angeles. (Photo by Chris Pizzello/Invision/AP)
Jennifer Aniston attends the press conference for "Cake" on day 6 of the Toronto International Film Festival at the TIFF Bell Lightbox on Tuesday, Sept. 9, 2014, in Toronto. (Photo by Evan Agostini/Invision/AP)
Actress Jennifer Aniston attends the "Cake" premiere at The Elgin Theatre during the Toronto International Film Festival on Monday, Sept. 8, 2014, in Toronto. (Photo by Evan Agostini/Invision/AP)
Jennifer Aniston attends the premiere for "Cake" on day 5 of the Toronto International Film Festival at the Elgin Theatre on Monday, Sept. 8, 2014, in Toronto. (Photo by Evan Agostini/Invision/AP)
Actors Sam Worthington and Jennifer Aniston attend the "Cake" premiere at The Elgin Theatre during the Toronto International Film Festival on Monday, Sept. 8, 2014, in Toronto. (Photo by Evan Agostini/Invision/AP)
U.S actress Jennifer Aniston poses for photographs at the photo call ahead of the European Premiere of Horrible Bosses, at the Dorchester Hotel in central London, Wednesday, July 20, 2011. (AP Photo/Joel Ryan)
Jennifer Aniston, right, and Jeffrey Ross present the award for funniest M.F at Spike TV's Guys Choice Awards at Sony Pictures Studios on Saturday, June 8, 2013, in Culver City, Calif. (Photo by Frank Micelotta/Invision/AP)
Jennifer Aniston, right, and Jeffrey Ross present the award for funniest M.F at Spike TV's Guys Choice Awards at Sony Pictures Studios on Saturday, June 8, 2013, in Culver City, Calif. (Photo by Frank Micelotta/Invision/AP)
Jennifer Aniston arrives at the SELF Magazine and Jennifer Aniston celebration for Mandy Ingber's new book "Yogalosophy: 28 Days to the Ultimate Mind-Body Makeover" by Seal Press at the Soho House on Tuesday, April 30, 2013 in Los Angeles. (Photo by John Shearer/Invision/AP)
Jennifer Aniston arrives at the world premiere of "Call Me Crazy: A Five Film" at the Pacific Design Center on Tuesday, April 16, 2013 in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
IMAGE DISTRIBUTED FOR LIFETIME - EXCLUSIVE - Executive producers Jennifer Aniston, left, and Kristin Hahn, speak before Lifetime and Sony Pictures Television's premiere event for "Call Me Crazy: A Five Film" at the Pacific Design Center on Tuesday, April 16, 2013 in West Hollywood, Calif. "Call Me Crazy" debuts on Saturday, April 20, 2013 at 8 PM on Lifetime. (Photo by John Shearer/Invision for Lifetime/AP Images)
Jennifer Aniston accepts the award for favorite comedic movie actress at the People’s Choice Awards at the Nokia Theatre on Wednesday Jan. 9, 2013, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)
Jennifer Aniston accepts the award for favorite comedic movie actress at the People’s Choice Awards at the Nokia Theatre on Wednesday Jan. 9, 2013, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)
Jennifer Aniston accepts the award for best on-screen dirtbag at the MTV Movie Awards on Sunday, June 3, 2012 in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Jennifer Aniston accepts the award for best on-screen dirtbag at the MTV Movie Awards on Sunday, June 3, 2012 in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Jennifer Aniston accepts the award for best on-screen dirtbag at the MTV Movie Awards on Sunday, June 3, 2012 in Los Angeles. (Photo by Matt Sayles/Invision/AP)
Jennifer Aniston arrives at the 64th Annual Directors Guild of America Awards in Los Angeles on Saturday, Jan. 28, 2012. (AP Photo/Dan Steinberg)
Jennifer Aniston arrives at the 64th Annual Directors Guild of America Awards in Los Angeles on Saturday, Jan. 28, 2012. (AP Photo/Dan Steinberg)
Actress Jennifer Aniston attends the Lifetime and Sony Pictures Television premiere screening "Five" at Skylight SoHo on Monday, Sept. 26, 2011 in New York. (AP Photo/Evan Agostini)
Actress Jennifer Aniston attends the Lifetime and Sony Pictures Television premiere screening "Five" at Skylight SoHo on Monday, Sept. 26, 2011 in New York. (AP Photo/Evan Agostini)
Jennifer Aniston, a cast member in "Horrible Bosses," walks the carpet at the premiere of the film, Thursday, June 30, 2011, in Los Angeles. (AP Photo/Chris Pizzello)
Jennifer Aniston, a cast member in "Horrible Bosses," poses at the premiere of the film, Thursday, June 30, 2011, in Los Angeles. (AP Photo/Chris Pizzello)
Jennifer Aniston, a cast member in "Horrible Bosses," gestures to photographers at the premiere of the film, Thursday, June 30, 2011, in Los Angeles. (AP Photo/Chris Pizzello)
Actress Jennifer Aniston accepts the decade of hotness award at the Spike TV Guys Choice Awards on Saturday, June 4, 2011, in Culver City, Calif. (AP Photo/Matt Sayles)
Jennifer Aniston accepts the award for decade of hotness at the Spike TV Guys Choice Awards on Saturday, June 4, 2011, in Culver City, Calif. (AP Photo/Matt Sayles)
Actors Justin Theroux and Jennifer Aniston attend HBO's "The Leftovers" season premiere at the NYU Skirball Center on Monday, June 23, 2014 in New York. (Photo by Evan Agostini/Invision/AP)
Justin Theroux and Jennifer Aniston attend HBO's "The Leftovers" season premiere at the NYU Skirball Center on Monday, June 23, 2014 in New York. (Photo by Evan Agostini/Invision/AP)
U.S. actress Jennifer Aniston attends a photo-call to promote the movie 'Just Go With It' in Berlin on Monday, Feb. 21, 2011. The movie with the German titel 'Meine erfundene Frau' will launch in Germany on Feb. 24, 2011. (AP Photo/Markus Schreiber)
U.S. actress Jennifer Aniston attends a photo-call to promote the movie 'Just Go With It' in Berlin on Monday, Feb. 21, 2011. The movie with the German titel 'Meine erfundene Frau' will launch in Germany on Feb. 24, 2011. (AP Photo/Markus Schreiber)
U.S. actress Jennifer Aniston arrives for the premiere of the movie 'Just Go With It' in Berlin, Germany, Monday, Feb. 21, 2011. (AP Photo/Michael Sohn)
U.S. actress Jennifer Aniston arrives for the premiere of the movie 'Just Go With It' in Berlin, Germany, Monday, Feb. 21, 2011. (AP Photo/Michael Sohn)
Gerard Butler and Jennifer Aniston in the press room at the 67th Annual Golden Globe Awards on Sunday, Jan. 17, 2010, in Beverly Hills, Calif. (AP Photo/Mark J. Terrill)
Jennifer Aniston in the press room at the 67th Annual Golden Globe Awards on Sunday, Jan. 17, 2010, in Beverly Hills, Calif. (AP Photo/Mark J. Terrill)
Jennifer Aniston is seen on the set of The Bounty at the center street court house in New York, Tuesday, August 4, 2009. (AP Photo/Donald Traill)
Jennifer Aniston is seen on the set of The Bounty at the center street court house in New York, Tuesday, August 4, 2009. (AP Photo/Donald Traill)
Jennifer Aniston is seen on the set of The Bounty at the center street court house in New York, Tuesday, August 4, 2009. (AP Photo/Donald Traill)
Actress Jennifer Aniston attends the press conference for "Life of Crime" on day 10 of the 2013 Toronto International Film Festival at the TIFF Bell Lightbox on Saturday, Sept. 14, 2013 in Toronto. (Photo by Arthur Mola/Invision/AP)
US actress Jennifer Aniston arrives for the German premiere of the movie "We're the Millers" at Cinestar cinema at Potsdamer Platz in Berlin, Germany, Thursday evening Aug. 15, 2013. (AP Photo/dpa, Joerg Carstensen)
Die U.S.-Amerikanische Schauspielerin Jennifer Aniston zusammen mit Regiesseur Payton Reed und Filmpartner Vince Vaughn bei einem Photocall im Hamburger CimeMaxx-Kino, anlaesslich eines Special-Screenings des Kinofilms "Trennung mit Hindernissen".Hamburg am Montag, den 12. Juni 2006. (AP Photo/Morris Mac Matzen) -U.S. actress Jennifer Aniston with Director Payton Reed an U.S. Actor Vince Vaughn, from left, during a photocall for the Special-Screening of "The Break-Up" at the CineMaxx Cinema in Hamburg, northern Germany, on Monday June 12 2006. (AP Photo/Morris Mac Matzen)
American actor Jennifer Aniston poses for a photograph as she arrives for the Australian premier of her new movie "The Break-Up" in Sydney Monday, June 5, 2006. (AP Photo/Rick Rycroft)
Justin Theroux, left, and Jennifer Aniston arrive at the 6th annual Governors Awards at the Hollywood and Highland Center on Saturday, Nov. 8, 2014 in Los Angeles. (Photo by Chris Pizzello/Invision/AP)
Justin Theroux, left, and Jennifer Aniston arrive at the 72nd annual Golden Globe Awards at the Beverly Hilton Hotel on Sunday, Jan. 11, 2015, in Beverly Hills, Calif. (Photo by Jordan Strauss/Invision/AP)
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MORE: 9 Times Jennifer Aniston Gushed About New Husband Justin Theroux

ET learned that the bride and groom's A-list guests included Tobey Maguire, Ellen DeGeneres, Portia de Rossi, Jimmy Kimmel, Howard Stern, John Krasinski, Emily Blunt, Jason Bateman, Will Arnett, Billy Crudup, and photographer Terry Richardson.

And of course Friends costar Lisa Kudrow was in attendance as well, which made us all wonder if they had a moment like this one!

A source told ET that guests danced to Michael Jackson, P. Diddy, Rihanna and Jay Z, and since the wedding was disguised as a birthday party for Theroux, who turns 44 on Aug.10, they also sang "Happy Birthday" to him around 10 p.m.

After the ceremony, the newlyweds boarded a private jet in Van Nuys, California, for their romantic honeymoon to Bora Bora.

Watch the video below to see more about the secret wedding.

Inside Jennifer Aniston and Justin Theroux's Star-Studded Surprise Wedding!

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