Blooming Lovely: Mummy-To-Be Sienna Miller Joins R Pattz For His Birthday Party

Sienna Miller (plus baby bump) made her way to Claridge's in London on Sunday night (13 May) to help Robert Pattinson celebrate turning 26.

The actress showcased a simple but chic look (grey marl dress, black blazer, Mulberry's Del Rey bag in Black Forest and peeptoe shoes) as she joined the Twilight actor and other celeb guests - by which we mean hello, Hugh Jackman! - for the birthday do.

Sadly for R Pattz, no-one seemed to be carrying any enormous boxes covered in brightly coloured wrapping paper. We hope they hadn't forgotten!