Kate repeats Temperley 'Amoret' gown for a night at the Museum

Last night, the Duke and Duchess of Cambridge attended a black-tie gala preview screening of Sir David Attenborough's film, Natural History Museum Alive 3D, which "brings to life" it's prehistoric inhabitants.

Catherine, who is patron of the museum in London, wore the glamorous black lace Temperley evening gown for the third time, looking as beautiful as she did on the other two pre-baby events.  

Jan 2012 - War Horse

Nov 2012 - St Andrew's gala

If you're in need of a show-stealing dress for a formal occasion, why not take some inspiration from the Duchess of Cambridge?  As she has demonstrated, a black lace dress such as this is a timeless item which can be worn again and again!  Sadly Kate's dress has sold out but it also came with a hefty price tag of US$2500. Thankfully there are many similar dresses available at more accessible prices.

Now, back to tonight's outfit. Kate accessorized the dress with her Jimmy Choo Cosmic pumps in black suede which are available at Net-a-Porter for US$695

Kate wore her favourite diamond bracelet and earrings set which were a gift from Prince Charles.

For the third outing in a row, the Duchess has worn her new Mappin & Webb 'Fortune' necklace.  She wore it earlier today to South Africa House and last week on her solo visit to the Shooting Stars Children's Hospice.

You can read full details of tonight's event here.