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OTRC: Dianna Agron's 'Glee' character to face her past in season 3? (Spoilers)

Dianna Agron talks to OnTheRedCarpet.com at the premiere of 'Glee the 3D Concert Movie' in Los Angeles on Aug. 6, 2011.

Could a tearful reunion be in store for Dianna Agron's character on "Glee"?

Agron, 25, plays glee club member and cheerleader Quinn Fabray on the hit FOX musical series, which returns for a third season on September 20.

Warning: Potential spoilers ahead!

During the first season, Fabray became pregnant. She gave birth to a baby girl, Beth, during the finale, and gave her up. The child was adopted by Shelby Corcoran, the director of a rival high school's glee club, played by Broadway star Idina Menzel. The character is also the long-lost biological mother of Fabray's nemesis, Rachel Berry, who is portrayed by Lea Michele.

"Idina's coming back so maybe that means Beth is coming back," Agron told OnTheRedCarpet.com host Rachel Smith at the recent Los Angeles premiere of "Glee: The 3D Concert Movie," which hit theaters on Friday, August 12.

Agron showcased a choppy, blonde bob at the event, which took place last weekend. The actress has since been photographed with pink hair.

The documentary follows the cast members of the series during their summer 2011 "Glee Live! In Concert!" tour. Agron said: "We're playing our characters on stage but there are so many moments that we tell inside jokes and poke people and do things."

She remained mum on other details regarding season 3 of the television show.

"Glee" co-creator Ryan Murphy stirred anger last month when he said that Michele's character and her fellow senior high school students Finn Hudson, played by Cory Monteith, and Kurt Hummel, would graduate after the upcoming third season, which starts on September 20.

Brad Falchuk, another co-creator, later calmed fans' fears, saying at Comic-Con in San Diego, California that the three characters would indeed graduate but that "they are not done with the show."

When asked if her character and others will "be moving on" after their senior year, Michele, 24, said: "Unless we flunk, which let me tell you, I could work that out."

Colfer also addressed the issue at the "Glee" film premiere.

"Everyone's freaking out," the 21-year-old told OnTheRedCarpet.com. "I think it's really not as big of a deal as everyone made it. But we've got to survive season 3 first. Let's worry about surviving season 3. They say it's going to be the best one yet so let's worry about it when we survive it."

There is one recurring "Glee" star who fans will probably not see again any time soon - Chord Overstreet, who played glee club, football player and Fabray's former love interest Sam Evans last season. Falchuck said the actor declined an offer to return for part of season 3.

However, Overstreet did appear on stage with the rest of his "Glee" co-stars at the 2011 Teen Choice Awards on Sunday as the cast accepted the award for Choice TV Show: Comedy.

Monteith, who plays Berry's main love interest, was also honored with the award for Choice TV Actor: Comedy. Darren Criss, who plays Hummel's boyfriend Blaine Anderson and who was upgraded to a series regular for season 3, was named Choice TV: Breakout Star. (Check out a full list of winners at the 2011 Teen Choice Awards, as well as photos of the celebrities on the blue carpet before the ceremony and the best moments from the show.

Reporting by Rachel Smith, co-host of KABC Television's entertainment show "On The Red Carpet" (check for local TV listings).

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