BBC presenter Stephen Nolan has joined the rush for Irish passports following the Brexit vote.
Post offices in Northern Ireland ran out of passport applications over the weekend as fears over the potential impact of the Leave vote hit home.
Dublin's foreign affairs minister Charlie Flanagan last night appealed for calm, insisting UK passport holders would continue to enjoy EU rights for the "foreseeable future" until a formal exit is negotiated.
"An unnecessary surge in applications for Irish passports will place significant pressure on the system and on turnaround times and is likely to impact those with a genuine need for passports to facilitate imminent travel plans," he said.
Anyone born on the island of Ireland or whose parents are Irish automatically qualify for citizenship.
Ian Paisley Jnr, the DUP's North Antrim MP and a prominent Leave campaigner, has been among those advocating dual citizenship, saying he has three passports.
"My advice is if you are entitled to a second passport then take one," he tweeted.
And Stephen Nolan announced that he has now "applied for an Irish passport".
In a post to his 145,000 Twitter followers on Sunday afternoon, he also professed his support for the Republic of Ireland football team, who were later in the day to be defeated by France 2-1 in the last 16 of the European Championships.
The broadcaster wrote: "What is happening to me? I've applied for an Irish passport and now have bought an Irish football top."
The post came after a photo emerged online of what appeared to be Nolan filling out a passport form in his car.
