Lea Michele today returned to the set of Glee and admitted: "I've missed Rachel so much."

The 26-year-old actress tweeted to her fans that she was looking forward to reprising her role of Rachel Berry in the Fox show, following the death of her boyfriend and co-star Cory Monteith.

Michele tweeted: "First day of glee today..And at my first wardrobe fitting for Rachel Berry for Season Five! I've missed her so much❤"

Monteith died last month in a Vancouver hotel from a toxic combination of heroin and alcohol.

The cast and crew of the Fox show held a private memorial for the 31-year-old in Hollywood, while a special tribute episode of Glee will be aired during the show's upcoming fifth season.