Pippa Middleton had a serious look on her face as she headed to work today in London.
Perhaps Pippa was busy thinking about how they would be celebrating her sister Kate Middleton's 30th birthday later in the evening.
It has been reported that instead of a big fancy party, Kate's birthday would just be a "low-key and private affair."
Pippa was, of course, looking as stylish as always in a striped skirt and fitted blazer.
Are you surprised Pippa and the family aren't throwing Kate a big party?