An iconic Manhattan restaurant is milking its famous mascot's birthday for all it's worth this week.

"Annabelle" the cow was installed atop the Old Homestead Steakhouse on Ninth Avenue 60 years ago.

A Nebraska farmer gave the cow to the restaurant as a gift.

Now the Old Homestead's owners are planning a birthday bash on the sidewalk for Thursday at 1 p.m.

The restaurant, which opened back in 1868, plans to serve 6,000 free sirloin burgers, a "chocolate-cow drink" and 500 pieces of birthday cake.