AJ Michalka heads into King’s Fish House for a bite to eat on Thursday afternoon (December 29) in Calabasas, Calif.

The 20-year-old actress had a bit of a scare on Christmas Day, suffering from an allergic reaction.

Big sis Aly tweeted, “Oh no!!! Up at 2am in the morning on our way to get medicine for lil AJ. She’s got an allergic reaction. Send a prayer.”

“AJ is find and resting. The doctor gave her an iv and a shot to feel better:) thanks for all your love xo,” she added.

Glad AJ is alright!