Lea Michele says Emma Roberts is her "best friend".

Emma Roberts and Lea Michele

Emma Roberts and Lea Michele

The 30-year-old actress stars with the 'Nerve' actress in the horror comedy television programme 'Scream Queens' and has posted a heart warming Instagram post to ring in the blonde beauty's 26th birthday on Friday (10.02.17).

Posting a black and white photo of the pair hugging, the former 'Glee' star wrote: Happy Birthday to truly the best friend a girl could ask for.. I love you Emma. There is no one I laugh harder with, would rather call in the middle of the night or blast the Wreckers with all day... thank you for always being there for me. Love you so much. (sic)"

Meanwhile, Lea recently claimed one of the "best moments" of her life was when Ryan Murphy - who also created 'Glee' - offered her the role of murderous Hester Ulrich alongside her best pal, who plays Chanel Oberlin.

She said: "I didn't know I was playing Hester until the last season of 'Glee', and Ryan called me and it was one of the best moments of my life, because here I was thinking that 'Glee' was ending and not quite sure what was next.

"And to get that call saying, 'I'm writing another part for you. You're in a neck brace, and you're going to work along with Jamie Lee Curtis and Emma Roberts,' I pinched myself.

"I have so many things that I want to do, and getting to play a darker role like this was obviously on my list."

And whilst Lea would say Emma is her best friend, she says Jamie Lee Curtis bonds them all together on set.

She said: "It's been really wonderful, and she's a dream to work with. Not only that, but Jamie Lee is the best leader we could ask for. There's not a day we don't come to work where Jamie hasn't brought us a gift or a note.

"We're all in a group text, the entire cast, every morning. It's a great family, and I really do believe that that translates onto the screen when you have that type of unity, and you see it in the work we all do together."