More information can be found here: bitches i said waht does e.s.t means First off you're so rude for calling them a b**** because off them thinking the standard time zone.
But anywho back to the question it means established or 'since', for ex.
She and Ethan later part ways and she gets back in Naomi's good books.In the season finale after prom, Annie is framed when Naomi's sister Jen ends up in bed with Liam.This is a list of the characters that have appeared on 90210, an American teen drama.The series introduces Annie Wilson (Shenae Grimes) and her adopted brother Dixon (Tristan Wilds), who move from Kansas to Beverly Hills with their father Harry (Rob Estes) and mother Debbie (Lori Loughlin).When that photo is sent throughout her school by Naomi, Annie has a resentment against Mark, but then forgives him.
She later agrees to a date with him where there is a confrontation between her and Mark.When the series was cancelled, Sachs called Estes and explained the spin-off and motivated him to participate.Sachs promised that although he was playing a parent, he would not "be furniture..in the seldom seen or heard parents who populate many youth-centric series, like the Walsh parents on the original 90210." Sachs described Tata's casting as an accident; a friend told Sachs that he had seen Tata in a store, which led to the offer of a recurring role in the series.She is based in part on Brenda Walsh from the original series.She lives with her parents, Harry and Debbie, her adopted brother Dixon (whom she considers her best friend) and her grandmother Tabitha.She and Ethan had dated after he broke up with Naomi, but concealed it so that Naomi would not find out until they were ready to tell her.