The singer told GMTV that time had gone by quickly since she was eliminated from the show in last year's semi-final.
Vickers said: "It's really strange, it's so surreal that it's all coming back round again, watching the adverts on TV, it really freaks me out.
"But it's exciting stuff, I can't wait. It's gone so quickly, it's just unbelievable, it's like a whirlwind."
Speaking about her upcoming stage role in The Rise and Fall of Little Voice, she continued: "It's great. It's such an amazing play by Jim Cartwright and I'm working with the most amazing people for the show. I'm just so lucky that I've got it."
Regarding her debut album, Vickers added: "It's going so good. I'm working with great people again - a producer that's worked with Bjork, Madonna and so many credible artists.
"It's got a good mixture of everything and I'm so excited. I've written most of it and co-wrote everything, so it's really cool."