Pippa Middleton finally admits 'THAT' bridesmaid dress was a bit tight on the bum

It was the dress that OWNED the Royal Wedding (sorry Kate).

And now Pippa Middleton has finally opened up about THAT figure-hugging bridesmaid dress that sent the world into meltdown.

Kate Middleton's sister, whose bum stole the show as she wiggled her way down the aisle behind the bride, has joked that it "fitted a little too well".

Speaking last night at the Women in Advertising and Communications dinner she said: "As I have found out, recognition has its upside, its downside and - you may say - its backside."

Snort.

Addressing a crowd of 400 at the event at Central London's Savoy Hotel, where tickets cost a whopping £132, she admitted she didn't sleep for two nights before the landmark televised wedding because she
was so nervous.

[Get Pippa Middleton's bottom with a military fitness workout]

She said she was "glad [the dress] fitted" at the time, adding, "In retrospect it fitted a little too well".

The 30-year-old beauty also confessed she was hurt by allegations she was cashing in on her sister's connections by writing her party-planning book, 'Celebrate'.

Duchess Catherine's younger sister became a worldwide sensation in April 2011 when her pert rear in her cream Alexander McQueen bridemaids dress stole the show at Kate and Prince William's wedding in London's Westminster Abbey.