Kate Middleton arrived at the Art Room’s National Portrait Gallery on Wednesday afternoon (April 24).

Showing off her growing baby bump, the gorgeous Duchess of Cambridge donned a powder blue dress with simple grey flats and greeted her admirers before heading inside the London venue.

In related news, the woman photographer responsible for taking the topless photos of the 31-year-old is reportedly under investigation.

According to the Daily Mail, legal sources in Paris identified her as Valerie Suau and she described her photos, which were published in France's La Provence regional newspaper back in September, as 'all decent'.

But now she is facing a criminal trial along with a man believed to be Ernesto Mauri, the publisher of French Closer magazine. Stay tuned to GossipCenter for the latest on this case.