HILARY Weston and her family have topped The Sunday Times Ireland rich list for the eighth-year running.
The owners of Brown Thomas, Selfridges and Primark have assets valued at €14.1 billion, while businessman Denis O'Brien places second in the list.
His wealth is valued at €4.74 billion, followed by Campbell's Soup heir John Dorrance and businessman Dermot Desmond.
In total, Ireland boasts 12 billionaires, one less than the previous year.
The wealthiest people in Ireland under the age of 30 are Stripe founders Patrick and John Collison.
The pair, who founded the technology company which enables individuals and businesses to accept payments over the internet, have a fortune of €1.47 billion.
Golfer Rory McIlroy entered Ireland’s top 250 for the first time with a wealth of €72 million.
In the overall British and Irish list, property tycoons David and Simon Reuben topped the ranking with a combined wealth of £13 billion (€16.8 billion).
The Reuben brothers own Millbank Tower, the John Lewis Partnership HQ in Victoria and shops in Sloane Street. They also own London Oxford Airport and London Heliport.
According to The Sunday Times, the list is based on “identifiable wealth, including land, property, other assets such as art and racehorses, or significant shares in publicly quoted companies. It excludes bank accounts, to which the paper has no access.”