Niall Horan to be an uncle

Niall Horan was overcome with emotion at his brother's wedding on Wednesday (27Mar13) when he discovered he is set to become an uncle.

The One Direction star acted as best man as his older sibling Greg married his fiancee Denise Kelly in the family's native County Westmeath, Ireland.

The couple's big day was made even more special for their family and friends when they announced they are expecting their first child.

Greg, 25, tells Britain's The Sun, "It's Niall's first niece or nephew so he's delighted."