Prince William and wife Kate Middleton enjoyed a pint of stout as they toured the Guinness Storehouse last night.
Kate, who provided a masterclass in diplomatic dressing on the first day of the royal couple's visit to Ireland, continued the theme by stepping out in a sparkling green dress.
Along with Prince William, she mingled and chatted with guests including actors Liam Cunningham and Robert Sheehan.
The duke told the crowd: "Ladies and gentlemen, a dhaoine uaisle.
"Catherine and I are delighted to be here tonight.
"Ireland is a country that we have both heard so much about, so we are really excited to be here with you to see it first-hand ourselves.
"In coming to the Guinness Storehouse we are both retracing the footsteps of my grandmother, who was shown how to pour the perfect pint here in 2011.
"Ladies and gentlemen, let me tell you it is not often that I find myself following the queen to the pub.
"But I am looking forward to testing for myself the theory that Guinness tastes even better in Ireland than overseas."
Earlier the royals visited Aras an Uachtarain where they met President Michael D Higgins and his wife Sabina.
This was Kate's first time meeting Mr Higgins - the Prince had met him twice before. The royal couple were warmly welcomed by Mr and Mrs Higgins and signed the visitors' book in the State Reception at the Aras.
The group then took part in a tea party, where they were joined by the British ambassador to Ireland, Robin Barnett, and Ireland's ambassador to Britain, Adrian O'Neill, as well as Claire Power, adviser to Mr Higgins, and Art O'Leary, secretary general to the President.
The Cambridges rang the Peace Bell in the grounds of the Aras and were shown a young oak tree planted by Queen Elizabeth nine years ago.
Kate wore a dark green Catherine Walker coat and an Alessandra Rich green floral pattern dress, with a green floral pattern, to meet the President.
The royal couple also met the President's dog Brod. However, Sioda, Mr Higgins' other dog, was not able to attend as she recently had surgery on her paw.
A 10-car fleet, as well as several garda motorcycles and two media buses, escorted the royal couple to Government Buildings for their second engagement of the day, where they met Taoiseach Leo Varadkar and his partner, Dr Matthew Barrett.
They were given a brief tour of the building before Mr Varadkar invited the couple to sign the visitors' book, explaining that it asked for one's name and address, to which William asked: "Would you like an address?"
The Taoiseach quipped back: "What's the postcode for Kensington Palace?"
When Mr Varadkar then light-heartedly asked Mr Barrett if he would like to sign the guest book, he laughed "no".
The four then sat down for a 25-minute private discussion.
Speaking to the Herald outside Government Buildings, Marino residents and royal fans Holly Forbes and Ciara O'Donoghue were buzzing with excitement to see William and Kate's car pass by.
"I'm extremely excited, can't wait to see them," Ms Forbes said. "I saw the queen when she came to Stormont. I do like the royal family a lot."
However, there were less than two dozen people waiting at the gates.
"We could have had a bit more support for them. I would have liked more walkabouts," said Ms O'Donoghue.
Offaly residents Mary Horan and John O'Callaghan were in Dublin for the day and stopped by to see the royal visitors on their way to the train station.
"We're not particularly big fans. We just happened to be passing by as we're here for the day," said Ms Horan.
"I would have expected there to be more people around to see them."