Amanda Seyfried - Sick Seyfried Hated Vanity Fair's Young Hollywood Shoot

Actress AMANDA SEYFRIED hated every minute of her recent Vanity Fair photoshoot with celebrated fashion photographer ANNIE LEIBOVITZ, because she had spent the night before throwing up.

The Mamma Mia! star joined fellow up-and-coming screen stars like Kristen Stewart, Anna Kendrick, Carey Mulligan, Mia Wasikowska, Abbie Cornish and Rebecca Hall for a Young Hollywood-themed cover shoot.

Sick Seyfried was a mess on the set of the shoot and regrets not making the most of her time working with Leibovitz.

She says, "It was one of the worst days of my life. I had been ill, I had been throwing up since 4am that day and I had to come in. It was my big moment to work with Annie Leibovitz and I totally crashed out."

But the 24 year old has some good memories of the cover shoot - because the other actresses were all so attentive to her.

She adds, "It was awful, but these girls were so supportive. You wanna hate them because they're your competition but every single one of them were (sic) so cool."