Walsh, who recorded the rock anthems "Funk 49," "Rocky Mountain Way" and "Life's Been Good" in the 1970s, will play some dates on Chesney's "Flip Flop Summer Tour."
"If you've ever listened to rock radio, you KNOW Joe Walsh," Chesney said in a statement this week. "Nobody's lived the life quite like him, and absolutely nobody plays guitar like he does, either. I think it's gonna take it up a bunch getting him out here with us."
Walsh, 59, was already an established solo artist when he was invited to join the Eagles for their landmark 1976 "Hotel California" album. He's credited with punching up their country-tinged sound.
Walsh joins fellow guests Sugarland and Pat Green on the Chesney tour. He was scheduled to perform at the kickoff Thursday in Omaha, Neb., and is expected to appear at some later dates.
The tour runs at least through Sept. 8 and includes stops in Atlanta, Cleveland, Dallas, Baltimore, Detroit, New York and Boston.
Last year, Chesney's "The Road & The Radio Tour" played to 1.3 million fans, making it one of the most successful of 2006.
The singer's many country hits include "When the Sun Goes Down," "Anything But Mine," "Summertime" and his latest, "Beer in Mexico."
NEW YORK - She may drop a few pounds here and there, but "Ugly Betty" star America Ferrera says she'll never become a Hollywood waif.
"There are times when I go to the gym and really try, and there are times when I just don't," the actress, who turns 23 on Wednesday, tells W magazine in its May issue. "I gain a pound; I lose a pound. But I think I've developed a really good sense of when I'm doing something for myself as opposed to when I'm doing something because of other people's expectations of me."
"And honestly, even if I wanted to be anorexic, I just don't have what it takes," she continues. "After four hours of being anorexic, I'd be like, â€˜It's been four whole hours! Feed me!'"
Ferrera is on the rise: She won Golden Globe and Screen Actors Guild awards this year for her role as awkward assistant Betty Suarez on "Ugly Betty," and has appeared on a host of magazine covers.
Salma Hayek, an executive producer of the ABC comedy, charmed Ferrara into accepting the part.
"Honestly I never saw myself doing TV, but Salma was so convincing," says Ferrera, who's starred in the movies "Real Women Have Curves" and "Sisterhood of the Traveling Pants."
"Salma is the kind of person who could sell you, like, a used stereo. She promised me that it would be done in the right way, and I just trusted her."