Wendy's is celebrating its 50th birthday with a brand new Frosty flavor. The Birthday Cake Frosty will only be available for a limited time.

Another new treat, the Birthday Cake Frosty Cookie Sundae, is being added to the fast-food giant's menu. It's a birthday cake Frosty topped with pieces of sugar cookie and sprinkles.

Dave Thomas opened his first Wendy's restaurant on November 15, 1969, in Columbus, Ohio.

A press release from the company states that the new menu items will be available for a limited time, but doesn't specify how long.