Pregnant Kate Middleton Celebrates 150 Years of the London Tube!

Catherine, Duchess of Cambridge (aka Kate Middleton) shows off her growing baby bump while making an official visit to the Baker Street Underground Station to celebrate 150 years of the tube on Wednesday (March 20) in London, England.

The 31-year-old pregnant royal was joined for the trip by Queen Elizabeth and Prince Philip.

For the visit, Kate looked gorgeous in a Malene Birger coat, while the Queen chose a Karl Ludwig coat with an Angela Kelly hat.

“I used to travel on the tube on a regular basis,” Kate said at the event.

15+ pictures inside of Kate Middleton and the Queen at the Baker Street Underground…