Designers and Fashion Insiders Sound Off on Celebrity Designers

From posh Saks Fifth Avenue to budget-conscious Steve & Barry’s, shoppers can now find everything from yoga wear to lingerie designed by celebrities. And there’s more to come.

This month, Spice Girl Melanie Brown unveiled a clothing line inspired by leopard prints, while Heidi Montag of MTV’s “The Hills” launched a collection of junior apparel called [...]