Amanda Bynes took to Twitter on Wednesday for the first time in months to share a beaming photo of herself and her friend, makeup artist Troy Jensen, along with a cheerful holiday message for her fans.
"Me and my bestie @itstroyjensen! Happy Holidays!" Bynes tweeted alongside the cheerful photo.
WATCH: Amanda Bynes Makes Rare Appearance in Revealing Dress at Hollywood Hotspot
In the pic, Bynes -- rocking long, bright blonde locks and a sexy black lace top under a leather jacket -- is all smiles she she poses with her "bestie."
A source tells ET that Bynes was spotted shopping by herself at the H&M inside the Westfield Fashion Square mall in Sherman Oaks, California on Wednesday night, wearing a white coat and black pants. Bynes later was seen eating dinner alone at a Chinese restaurant in the mall's food court.
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"She looked very somber, and lonely," said the source, adding that the outfit Bynes wore in her recent tweet was the same she wore while leaving a nightclub in West Hollywood on Dec. 11.
Bynes' cheerful pic with Jensen is similar to the photo she posted in her previous tweet back in August when she shared a pic of herself and fashion designer Michael Costello.
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The 29-year-old Easy A actress made a rare public appearance at the beginning of the month when she was spotted rocking a cleavage-baring, zip-up white dress at Craig's restaurant in West Hollywood. Check out the video below for a look at Bynes' revealing ensemble.