Lady GaGa's debut fragrance will smell of "blood and semen".

The controversial singer has signed a deal with Coty Inc. - one of the world's largest beauty companies - to create a range of perfumes, following in the footsteps of other pop stars such as Britney Spears, Mariah Carey, Beyoncé, Avril Lavigne and Gwen Stefani but it has been reported her scent will be a little more unusual.

An unnamed source who has been hired to help develop the perfume has told website Fashionista the controversial singer requested that the scent "smell of blood and semen."

It was revealed last year that Gaga will name her fragrance Monster, after her fans who she refers to as "little monsters".

The unusual perfume will be released in 2012.

Along with developing her own scent, Lady Gaga is also reportedly set to enter the world of fashion.

The 24-year-old singer is said to be planning to collaborate again with French label Thierry Mugler after she acted as musical director at the menswear show in Paris earlier this month.

Thierry said: "It's me and her just having fun and getting very inspired from the idea of Mugler. She's very much involved, more in the early stages."