Pregnant Kate Middleton and Prince William Attend Cheltenham Races, Duke Gets Ear Pulled by Pal

Royals peep the ponies at English festival and engage in some horsing around

The Duke and Duchess hit up some horse racing.

Following in the footsteps of younger sister Pippa Middleton the day before, Kate Middleton made an appearance at the Cheltenham Festival in England on Friday.

Sporting the same brown Lock & Co. hat she wore at a friend's wedding in Switzerland earlier this month, the stylish royal mother-to-be was joined by Prince William, who looked pretty dapper himself.

A source tells E! News that the Duke and Duchess were very happy, smiling and enjoying the day at the races, noting that the two acted like any normal couple, interacting with others in their group.

During the sporting event, William found himself the victim of an ear tug by a pal, much to the amusement of Kate standing behind him.

And based on the photo seen here, the heir to the throne either didn't notice the playful pull or simply chose not to acknowledge it while watching the races. 

Talk about concentration!