Catherine, Duchess of Cambridge and Prince William were spotted arriving at Claridge’s Hotel in London last night to attend the Thirty Club dinner.

As always, all eyes were on Catherine, who looked beautiful wearing a Roland Mouret Fall 2009 long-sleeve gown.

The show-stopping cream gown was quite daring for the reserved Duchess as it had a thigh-high split.

Via the split we got to see her sparkling Jimmy Choo ‘Vamp’ sandals which complemented her embellished clutch.

As you know, I haven’t always been a fan of Catherine’s style, but this look is elegant, simple and refined which is very much her style trademark.

Glossy tresses and silver jewels completed the look.

You may remember that Amber Valetta wore the runway version back in 2009, Carla Bruni-Sarkozy wore the same gown in 2010 and I wore it to the 2010 BAFTAs.

Who knew that the Princess and I had the same taste in clothes?

You can buy Catherine’s Jimmy Choo ‘Vamp’ sandals from farfetch.com.

Credit: Style.com & FameFlynet