The actress, who plays Quinn Fabray on the Fox musical series, said that while Glee has done a storyline centred around prom in past years, this season's holds more weight as many of the main characters are seniors in high school, attending the event for the final time.
© Fox
© Fox
Talking to MTV News, Agron explained: "We had [director] Eric Stoltz back with us, who directed last year's - he's really fun and really knows teenage life.
"That prom episode last year really felt like Pretty in Pink and Sixteen Candles - it had that awesome touch to it."
Asked how this year's prom will differ, Agron continued: "It wasn't our last year of school [last year] and there wasn't really that thought process like that this might be one of the last moments together, so that's all really incorporated in this year's.
"There's a fun theme to it; there's some really surprising moments. I think people will like it."
The 25-year-old added that she has positive memories of her own prom, adding: "We went with all of our friends, so it wasn't really so much of 'let's have a romantic date'.
"There were about 25 of us who just said, 'OK, pick somebody'. And we all went in a bus and we all had dinner before. It was just really fun and a lot of dancing."
Glee's prom episode airs tonight (May 8) at 8/7c on Fox.
