Rachel Zoe - Rachel Zoe Spent Sleepless Nights Over Karolina Kurkova's Met Ball Dress

Rachel Zoe Spent Sleepless Nights Over Karolina Kurkova's Met Ball Dress

Rachel Zoe spent sleepless nights over the Met Ball dress she designed for Karolina Kurkova.

Model Karolina stunned critics at the prestigious event in New York last week in a custom-made sequinned gold gown from the Rachel Zoe Collection but the designer admits she was very nervous beforehand.

Stylist to the stars Rachel - whose clients include Cameron Diaz, Anne Hathaway and Eva Medes - told website FabSugar: ''I spent a lot of nights dreaming about what I wanted it to look like. Long sleeves, a very low back and a high neck were all musts for the dress, but the much-talked about headpiece was a last-minute addition.

''It happened literally the day before . 'What can I add to really take it to the next level?' So we made the turban-slash-head-wrap to give it that deco-glamour that [Elsa] Schiaparelli was so known for.''

Karolina, 28, walked the red carpet in the floor-length bodycon number at the Metropolitan Museum Of Art's Costume Institute Gala with 40-year-old Rachel, who wore a white dress from Commes des Garcons.

Rachel was nervous about designing a custom-made piece for the prestigious New York City event.

She said: ''Not in my lifetime did I think that it would be a reality,'' she admitted. ''Honestly, I don't think I've recovered from it - it was hard work, a long process and an incredible process.''

The Met Ball saw a number of other fashion-forward looks on celebrities like Florence Welch, Beyonce and Marc Jacobs - who wore a see-through lace shirt dress.