In celebration of one of peoples' favorite fall beverages, Starbucks is promoting a limited-time offer to go with its popular Pumpkin Spice Latte.

The coffee chain is offering Pumpkin Spice Whip, a pumpkin spice-flavored whipped cream, at select stores.

The offering serves as a celebration of the latte's 13th birthday, which made its official debut in Starbucks stores October 10, 2003. The company said the autumn latte is its "most popular seasonal beverage of all time."

The mix, made with real pumpkin, cinnamon, ginger, clove and nutmeg, can be added to the latte is or any other Starbucks drink for no extra charge.

Plus, baristas will give "HBD PSL" pins to costumers who order the Pumpkin Spice Latte until Monday, while supplies last.

Pumpkin Spice Whip is available until Sunday.