On the red carpet: Courteney Cox, Cameron Diaz, Keira Knightley, Michael Fassbender

Courteney Cox went behind the camera for her first directorial effort Just Before I Go, which premiered at the Tribeca Film Festival.

She turned out in a figure-hugging leather top and sheer skirt, with ultra-dark eye make up. A bit too goth for our tastes.

Cameron Diaz was demure on the red carpet at the New York Cinema Society premiere of The Other Woman in a slinky navy number from Vionnet. The mid length, asymmetrical dress, styled with red lips and nude courts, left one shoulder on show.

Keira Knightley continued her love affair with Chanel at Tribeca. This time she chose a piece from Couture Spring 2014. Heavily embellished, full skirted and iridescent, this would be sensational — if it wasn’t for latest trend for the Barbie doll waist effect.

It takes a lot to outshine Michael Fassbender on the red carpet — but Domhnall Gleeson succeeded at the premiere of Frank. He was dressed in skinny jeans and Converse — but he could have worn anything with that cheeky charm.