Lindsay Lohan's 'Glee' Cameo: Co-Star Perez Hilton Weighs In!

Celebrity-gossip blogger skirts addressing Lohan's alleged unprofessionalism while shooting this week's 'Nationals' episode.

Celebrity-gossip blogger Perez Hilton guest stars on this week's big "Nationals" episode of "Glee," but was uncharacteristically reluctant to address the rumors of fellow guest star Lindsay Lohan's alleged on-set misbehavior when MTV News caught up with him at Wango Tango in Los Angeles this weekend.

"I'm on 'Nationals,' a very important episode, and Lindsay Lohan is also on this episode," Hilton told MTV News. "And it's a nail-biter. Everybody has to watch."

When the conversation turned to allegations that Lohan was hours late to set and was difficult once she finally arrived, Hilton chose his words very carefully, turning the conversation back to himself — and in so doing, seemed to imply that Lohan was not at her professional best.

Asked about talk of Lohan's misbehavior, Hilton said, "I showed up to set early and prepared and was very happy to be there and professional, excited and appreciative for the opportunity."

Rumors of on-set trouble erupted April 25, when actress Dot-Marie Jones, who plays Coach Beiste on the Fox hit, tweeted about an unnamed person's late arrival to set, causing delays in filming. "Gonna be a long day!! Some ppl show up late and just throw a wrench in things," Jones reportedly tweeted. "Not cool! I'd rather be an hour early (I was) than 5 minutes late!" Jones' tweet has since been deleted.

Regarding Lohan's alleged tardiness, the actress' rep, Steve Honig, told E! News that there was a mixup with her call time, and said any claims of problems on the "Glee" set are "utter B.S."

"This is a classic example of people trying to bash Lindsay. She busted her ass yesterday and is back on set again today," he continued.

Like Hilton, Lohan appears as herself on the episode. The pair play judges at the national singing competition the show's choir, New Directions, participates in.