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ARTIE LANGE: U.S. comedian Artie Lange, who underwent treatment for drug addiction after a suicide attempt, says he would love to return to Howard Stern's radio show.

Lange was Stern's sidekick from 2001 until last year when he suffered his breakdown.

E! News said Lange talked about how much he'd like to collaborate again with Stern when he was interviewed Wednesday on Fox Sports Radio.

"That would be the greatest thing ever," Lange said of a possible return to Stern's Sirius satellite radio show. "I was on the greatest show of all time for nine years but I put them in a very awkward situation to say the least. But I love all of them."

NICOLE RICHIE: Nicole Richie and John Varvatos have signed on to be celebrity mentors on the U.S. reality competition series "Fashion Star," NBC said.

They join previously announced celebrity mentor Jessica Simpson and host Elle Macpherson, Paul Telegdy, executive vice president of alternative programming at NBC and Universal Media Studios, announced Thursday.

"NBC could not have asked for better additions to the celebrity mentors than John Varvatos, one of the most well-known menswear designers in the nation, and international style icon and creative director, Nicole Richie," Telegdy said in a statement. "Both are trendsetters and taste-makers and their design skills and expertise will be invaluable to our contestants on the series."

"Jessica, Nicole, John and Elle make the most exciting team we have ever worked with on a reality television show and we are thrilled to feature such an extraordinary group of mentors and designers," added Ben Silverman, executive producer of "Fashion Star" and chief executive officer and founder of the multimedia studio Electus.

RYAN PHILLIPPE: Hollywood actor Ryan Phillippe was with his ex-girlfriend when she gave birth to their daughter, a source close to the former couple told UsMagazine.com.

Model-actress Alexis Knapp gave birth July 1, the celebrity news Web site said Thursday.

The child's name, birthplace and measurements were not reported.

Phillippe, who has two children with his ex-wife Reese Witherspoon, dated Knapp last year. They broke up in September.

Phillippe is best known for his work in the films "Cruel Intentions," "Crash" and "Gosford Park."

Knapp will soon be seen in the movie "So Undercover."

NOAH WYLE: U.S. cable network TNT said Thursday it has renewed its alien-invasion series "Falling Skies" for a second season.

The science-fiction action-drama stars Noah Wyle, Moon Bloodgood, Will Patton and Drew Roy. Created for TNT by DreamWorks Television and executive producer Steven Spielberg, it premiered last month in the United States.

TNT said it has ordered 10 episodes for the second season, which is slated to air in summer 2012.

"'Falling Skies' is a true standout series, from its ambitious storytelling, high-profile cast and production team to its phenomenal success when it comes to international and time-shifted viewing," Michael Wright, executive vice president and head of programming for TNT, TBS and Turner Classic Movies, said in a statement. "We're reaching new audiences with 'Falling Skies' and look forward to seeing where this fascinating and exciting series takes us next."