Lifetime's hit show Army Wives is recruiting some new guest-stars for its third season, which premieres this coming Sunday, June 7.

For starters, Grammy-winning recording artist Shelby Lynne will appear in an August episode, playing a country music singer whom Roxy adored while growing up, but now is "down and out," cast member Brigid Brannagh (Pamela) tells TV Guide.

"Roxy (Sally Pressman) ends up befriending her - and then she sings a little ditty at the Hump Bar, which is pretty cool."

Appearing in the episode after Lynne's is Gilmore Girls alum Kelly Bishop.

She will be playing the wife of a late, great state senator, in town to attend a building-naming ceremony. Charged with entertaining the special guest, Claudia Joy and Denise come to realize the not-so-weeping widow's secret - that she's a cougar!

Army Wives was renewed for a fourth season in February. Follow this link for lots of Army Wives spoilers in advance of Sunday's season premiere!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.