The 28-year-old 'Sydney White' actress was seen donning a cropped sweater with a jumper tied around her waist and a pair of grey jeans. She was fussing with her freshly dyed blonde hair, reported Ace Showbiz.
The night before, Bynes was reportedly "talking to herself" when she was having a meal at a LAX airport restaurant.
"Amanda was at the table by herself with all her makeup spread out across the table. She was talking to herself and putting on a ton of makeup. She would apply some, look in her compact and make weird pouty faces and then say to herself, 'Ok, that looks fine'," an eyewitness said.