Kate Middleton and Prince William did something they seldom do tonight: walk a red carpet. The Duke and Duchess of Cambridge just arrived at the Tusk Conservation Awards in London. Kate rewore the aqua green Jenny Packham gown she wore at the 2012 Our Greatest Team Rises gala dinner. William, meanwhile, was alongside her in a black tie suit.

Here's Kate originally in the dress, a look that royal fans point out she originally wore before giving birth to any of her three children:

The two last attended the awards together in September 2013. It was Kate's first appearance after giving birth to Prince George that July. For the occasion then, Kate wore a sequined Jenny Packham gown with her hair down-a favorite designer of hers for events like this.

Kate and William last walked a red carpet generally in February this year when they attended the BATFA Awards. Kate, who was pregnant with Prince Louis at the time, wore an emerald Jenny Packham gown to the ceremony: