The 26-year-old actress - who plays Mercedes Jones in the musical TV show - has filmed her final scene for the series as her character is graduating from high school, and is now looking forward to a ''summer vacation''.
She wrote on twitter: ''That's a wrap on Amber Riley! Just closed a chapter in my life, the only thing I've known day in and day out for three years. I'm going to miss the whole Glee family, seeing them everyday! I have so many brothers and sisters now :) But I am looking forward to a much needed and deserved summer vacation! SCHOOL'S OUT Glee Kids! Let's play! (sic)''
Amber is one of a number of stars who are ending their run on the show.
She added on twitter: ''Stay tuned to see what's next for Mercedes ;) (sic)''
Lea will be filming her last day on the series today (10.05.12) and she admits she is very sad at the prospect.
She wrote on twitter: ''On set now shooting ... It's my second to last day of filming season 3! Tomorrows gonna be so sad!(sic)''