The royal sweethearts, who both graduated from the town's university in 2005 (pictured), have returned to the place where they fell in love.
They are there to unveil a plaque marking the 600th anniversary of the university.
And though it's only Kate's second official engagement, she is sure to be feeling confident after the wonderful impression she made in Anglesey on Thursday.
The brunette beauty seemed to instantly charm the crowd, who numbered some 1,000.
Smiling warmly, she chatted away with members of the public, at one point even stopping to pat a West Highland terrier.
And gifts of flowers were graciously received. When someone gave her a bunch of daffodils, she responded with: "Thank you so much! They’re lovely!"
Kate had probably been advised on what to do and say before Thursday's debut. And she had clearly done her homework, learning the words to the Welsh national anthem.
But something which can't be learned – her natural sense of humour and way of putting people at ease – shone through.
"You look nice and warm,’ she told shivering seven-year-old Freya Ainsworth, raising laughs all round.
And upon seeing a framed picture of Princess Diana with William and Harry in short trousers, she kept things lighthearted.
"Oh my goodness," she exclaimed, grabbing the photo and pointing at William. "Look at his knock-knees!"
Kate remained calm, collected and confident – qualities which will stand her in good stead as she enters public life.