LOS ANGELES -- One of California's favorite burger chains is celebrating a big milestone on Monday. Happy 70th birthday, In-N-Out!
RELATED: In-N-Out expands menu for first time in decades with addition of hot cocoa
The beloved fast food chain opened its doors on Oct. 22, 1948 in Baldwin Park.
In-N-Out is celebrating the day releasing its 2019 T-shirt in restaurants - along with an official party Nov. 17 at the Fairplex in Pomona.
The restaurant now has 334 locations in six states.
In-N-Out celebrates 70th birthday
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