After Mischa Barton's bullying claims, actress accused of being a 'nightmare' on sets of The O.C.

Michael Costello has found himself at the center of his own bullying allegations from "Real Housewives of Atlanta" star Falynn Guobadia. The designer has made headlines after accusing Chrissy Teigen of bullying him and leaving him with "unhealed trauma" and suicidal thoughts after she allegedly worked to blacklist him within the fashion community.

Fashion designer Michael Costello went public to claim that he was among the victims of Chrissy Teigen’s cyberbullying, alleging she called him “racist” and threatened to end his career. To this day, Costello said, he’s “traumatized, depressed and has thoughts of suicide.”

Mischa Barton is opening up about the trauma she suffered for being "sexualized" in the past as a young actress in Hollywood. The "Hills" alum, 35, penned a lengthy essay published Friday in the U.K.'s Harper's Bazaar in which she discussed the importance of the Me Too movement and the scrutiny she faced playing "mature" characters onscreen.

Mischa Barton’s life as a young actress was a difficult one.

Putting herself back out there! Jana Kramer opened up about her thoughts on dating following her divorce from Mike Caussin.

Never say never! Jana Kramer isn’t opposed to having more children after splitting from Mike Caussin.

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Mischa Barton was allegedly a "nightmare" to work with on the hit teen soap "The O.C.," a source exclusively tells Page Six. After the actress claimed she was "bullied" on the set of the early-aughts show, a source tells us the crew was frustrated that Barton would constantly "show up late" for filming.

The other shoe dropping??

When it aired, The O.C. was one of the most popular shows on TV and brought immediate international fame to its stars. In the years since many of the cast have gone relatively under the radar and one has even claimed she was badly treated on set. However, Rachel Bilson has disputed Mischa Barton’s bullying claims.

Former Big Brother winner Dr. Will Kirby is “grateful” for the court system after former costar Mike “Boogie” Malin was found guilty of felony stalking.

Rachel Bilson and Melinda Clarke are speaking out about Mischa Barton's recent comments regarding her shocking exit from. During a sneak peek of a future episode of their podcast, , the co-stars addressed Barton's interview, during which said she felt «unprotected» during the making of the show.Barton starred on the series from 2004 to 2006, before her character, Marissa Cooper, was killed off during the season three finale.

The subject of Mischa Barton’s recent interview regarding her exit from The O.C. came up during the Tuesday (June 1) episode of Welcome to the O.C., Bitches!, the podcast hosted by her former costars, Melinda Clarke and Rachel Bilson.

Actress Mischa Barton recently took The O.C. fans by surprise when she candidly opened up about her unexpected exit from season three back in 2006.

Mischa Barton’s former The O.C. co-stars don’t exactly see eye-to-eye with her when it comes to their time on the hit show!

The Hills’ newest cast member Caroline D’Amore, 36, was featured on the first season of MTV’s reboot as a good friend of Mischa Barton, 35. But those days are long gone and Caroline thinks her former pal needs to soften up a bit after making some pretty unkind comments about her business.

Trevante Rhodes is taking his turn in the boxing ring. The actor has signed on to play Mike Tyson in Hulu's upcoming limited series, , which he will also executive produce.