Watch Prince William and Kate Middleton Share Flirty Exchange in St. Patrick's Day Video

The Duke and Duchess of Cambridge are still very much smitten with each other. On Wednesday, March 17, Kate Middleton and Prince William took to Twitter to share a few kind words in honor...

Watch Prince William and Kate Middleton Share Flirty Exchange in St. Patrick's Day Video
Catherine, Duchess of Cambridge, Kate Middleton, Prince WilliamThe Duke and Duchess of Cambridge are still very much smitten with each other. On Wednesday, March 17, Kate Middleton and Prince William took to Twitter to share a few kind words in honor...