The Christian conservative group American Family Association (AFA) has launched a boycott against Old Navy for offering Gay Pride t-shirts, first reported.

The retailer began selling 2 Gay Pride t-shirts last week in 26 stores nationwide.

“We are proud to support the new @OldNavy Gay Pride tees. Yay for all kinds of families!” the retailer tweeted to its more than 44,000 followers last week.

One shirt exclaims “Love Proudly” in rainbow colors, while a second offers a rainbow flag on a black background. Both include the tagline, “Pride 2011 Old Navy.”

Commenters on Old Navy's Facebook page said the shirts sold out quickly in many stores.

Ten percent of sales go to gay activist Dan Savage's It Gets Better Project, which urges troubled gay teens not to give in to bullies, because life eventually gets better.

Four of the group's radio personalities have urged Christians to boycott the clothing giant owned by the GAP.

“If you are not in promotion of the gay lifestyle. If you are not in promotion of men loving men and women loving women sexually, relationally, and promoting that as a lifestyle in this country, and throwing your money. If you're not in favor of throwing your money after promoting that idea across this country, then why would you shop at Old Navy. Because you buy these t-shirts they're giving a portion of those proceeds to this organization that is promoting gay pride love in this country,” Buster Wilson, managing director of AFA's American Family Radio, told listeners on Wednesday.

“This is very irresponsible for Christians to go to Old Navy,” he added. “When you support them, you are supporting what God calls an abomination.” (The video is embedded in the right panel of this page.)

AFA has previously called for boycotts against other corporations over their support for gay rights, including Ford Motor Company, Pepsi, Campbell Soup Company, McDonald's and Hallmark.

Recently, home improvement giant The Home Depot shrugged off an AFA boycott against it.