Since the dawn of advertising, lovely ladies have been used to sell everything from soap to pickup trucks. But the women of Pinups for Pitbulls are more than simply beauties or burlesque queens. Founder Deirdre Franklin, whose stage name is Little Darling, describes a modern burlesque artist as “a strong woman who’s expressing herself in an art form that’s liberating.” Part of a subculture that’s revived a classic American art, they’re also using their talents to save a classic American dog…