"KNOCK KNOCK LIVE" TAPS CO-HOSTS KELLIE PICKLER, ADRIENNE BAILON, ROSS MATHEWS, JORDAN "SHORTY" JOHNSON AND CHUEY MARTINEZ TO JOIN RYAN SEACREST FOR A SUMMER OF SURPRISES PREMIERING TUESDAY, JULY 21, ON FOX

TV and Radio Personality Ryan Seacrest to Host Live from Los Angeles

David Beckham, Luke Bryan, Common, Florida Georgia Line, Mike Holmes, Lea Michele and Meghan Trainor Among Celebrities Scheduled to Make Special Appearances

KNOCK KNOCK LIVE, this summer's LIVE, can't-miss, life-changing television event, has tapped country superstar Kellie Pickler, actress and singer Adrienne Bailon, TV host Ross Mathews, host and recording artist Jordan "Shorty" Johnson and TV/radio personality Chuey Martinez as co-hosts. The weekly series will feature host Ryan Seacrest live in a Los Angeles-based studio, while his team - Pickler, Bailon, Mathews, Johnson and Martinez - travel across America, arriving at unsuspecting people's doorsteps with a chance to win big prizes, turn their wildest dreams into reality and even meet their favorite celebrities, including David Beckham, Luke Bryan, Common, Florida Georgia Line, Mike Holmes, Lea Michele, Meghan Trainor and many more. KNOCK KNOCK LIVE premieres Tuesday, July 21 (9:00-10:00 PM ET live/PT tape-delayed) on FOX.

The co-hosts are:

Kellie Pickler

Kellie Pickler won the hearts of television viewers as a contestant on the fifth season of AMERICAN IDOL. In 2006, she signed with Sony Records and released her debut album, "Small Town Girl," which produced three hit singles. In 2008, she released her self-titled sophomore record and in 2011, her third studio album, "100 Proof," was named the No. 1 Country Album of The Year by Rolling Stone. In 2013, Pickler won the mirror ball trophy when she partnered with dance pro Derek Hough on Season 16 of "Dancing with the Stars." Later that year, she released her fourth album, "The Woman I Am." Currently, she and her husband, songwriter/producer Kyle Jacobs, are filming the upcoming cable reality series "I Love Kellie Pickler," which will air later this year.

Adrienne Bailon

Adrienne Bailon was born in New York City and first stepped into the spotlight in 1999, when she was tapped as the lead singer of multi-Platinum R&B girl group, 3LW. She then went on to become a founding member of the pop group The Cheetah Girls, which sparked multiple cable television movies, a world tour and numerous merchandising deals. Bailon's acting credits include "That's So Raven," "Buffalo Dreams," "All You've Got," "Coach Carter," "Lovestruck" and "I'm in Love with a Church Girl." Additionally, she appeared on her own reality show, "Empire Girls," and is currently a co-host on the syndicated daytime talk show, "The Real."

Ross Mathews

Ross Mathews won the hearts of millions of Americans during his television debut - as a correspondent for "The Tonight Show with Jay Leno." Since then he has become a national bestselling author, and a fixture on entertainment television. He can currently be seen doing live red carpet award show coverage year-round. He recently hosted "Live From E!" and his own weekly celebrity gossip and entertainment series, "Hello Ross." He currently can be seen as a judge on "RuPaul's Drag Race," and can be heard weekly on his podcast, "Straight Talk with Ross Mathews."

Jordan "Shorty" Johnson

Born and raised in St. Louis, MO, Jordan "Shorty" Johnson hosted his own Saturday morning radio show when he was only 12 years old. A few years later, he was hired as a full-time night jock at the city's No. 1 radio station, 100.3 The Beat, and also had a No. 1 record in St. Louis, "Wah Wah Wow." In 2012, Johnson was selected as a co-host on the music video countdown show "106 and Park." He is also signed as a recording artist on Warner Bros./Atlantic Records. Shorty currently has the #1 radio shows on two Radio-One stations, 93.9 WKYS in Washington DC and HOT 104.1 in St. Louis.

Chuey Martinez

Chuey Martinez is no stranger to the spotlight. He grew up in East Los Angeles, and launched his entertainment career at the age of 16. Nine years later, he joined iHeartRadio, Sirius XM and L.A's No. 1 music station, 102.7 KIIS FM, as on-air talent. In 2012, he was tapped as the host of the cable series "All You Can Meat." He also is forming his own production company, "Chumongous Productions," for the development of film, TV, digital and music projects.

If you would like to nominate a special person or a family deserving of an unforgettable moment, or if you yourself want to be a part of KNOCK KNOCK LIVE, please visit knockknocklive.com for an opportunity to receive the "knock" of a lifetime.

KNOCK KNOCK LIVE is produced by XIX Entertainment and dick clark productions. Simon Fuller, Michael Herwick, Allen Shapiro, Mike Mahan, Mark Bracco, Stijn Bakkers, Nicolle Yaron, and Ryan Seacrest serve as executive producers. Fuller, Seacrest, dcp and FOX are stakeholders in the format worldwide. Simon Fuller's business XIX Entertainment has appointed DCP to be the international distributor of the format and series. Like KNOCK KNOCK LIVE on Facebook at www.facebook.com/KnockKnockFOX. Follow the series on Twitter @KnockKnockFOX and join the discussion using #knockknock. See photos and videos on Instagram by following @knockknockFOX. For more information on KNOCK KNOCK LIVE, please visit www.fox.com/knockknocklive. Follow Ryan Seacrest and his KNOCK KNOCK team on Twitter @RyanSeacrest; Adrienne Bailon @Adrienne_Bailon; Jordan "Shorty" Johnson @ShortydaPrince; Ross Mathews @helloross; Chuey Martinez @ChueyMartinez; and Kellie Pickler @kelliepickler.