The event wasn't the first time that the brunette beauty was seen on the arm of William, however, as she had been quietly dating the royal for years prior.
In fact, the two attended a society wedding in 2005 and were seen on many occasions out and about in London.
But let's flash-forward to yesterday evening, when Cressie and Harry made their first official debut as a couple at the We Day in the U.K.
The redheaded royal made a speech to over 12,000 students at the inaugural event benefiting Free the Children, an international charity working to engage and empower young people to work together towards ending poverty.
The two were seen showing off some adorable PDA in the stands shortly after the 29-year-old made his speech.
Looks like we'll be seeing much more of Cressida and Harry together!