Marriage equality in Ireland is now official.

This evening President Michael D Higgins signed into law the Thirty-fourth Amendment of the Constitution (Marriage Equality) Bill 2015 at Áras an Uachtaráin, enshrining in law the result of May's referendum result.

The amendment passed a referendum by a margin of 62-38 per cent, but faced delays before it could be signed into law.

The delay arose from a number of challenges raised against it but all were struck down at a high court hearing.

The amendment, which states "marriage may be contracted in accordance with law by two persons without distinction as to their sex," now takes its place in the pages of Bunreacht na hÉireann.

The Government will now bring forward the Marriage Bill 2015, which will make the necessary changes in existing statute law to give effect to the new constitutional provision and this Bill will be introduced in Dáil Éireann in September.