So Princess Beatrice's glowing smile whilst on a date with long-term boyfriend Dave Clark was no surprise after she attended the nuptials for a family member on Thursday.
Hand in hand, the couple kept close, wearing matching grins as they left a restaurant in Mayfair.
Loved up: Princess Beatrice and fiance Dave Clark enjoy a night out in Mayfair.
Her boyfriend wore a navy one-button suit with his white shirt casually unbuttoned to reveal the top of his seemingly smooth chest.
The princess has been dating Dave - who was introduced to Beatrice by her cousin and his school friend Prince William - since 2006.
Marriage? The couple have been dating for six years so a proposal would not be unexpected
And apparently, her parents Prince Andrew and the Duchess of York would be thrilled at the prospect of her tying the knot with the Virgin Galactic businessman.
‘Both Sarah and Andrew would be delighted to call Dave their son-in-law,' a source told MailOnline.
Family affair: Beatrice attended the wedding of her step-grandmother earlier in the day with Prince Andrew, Sarah Ferguson and Princess Eugenie
Day to night: The red headed princess wore the same outfit from the wedding to dinner that evening
Earlier in the day, her parents and sister accompanied Beatrice to the wedding of her step-grandmother Susan Ferguson.
Wearing the same outfit to dinner that evening, the fifth in line to the throne clearly had learned from her fashion mistake at the last family wedding.