Conor McGregor and fiancee Dee Devlin make incredible gesture to Crumlin Heart Centre as UFC star makes HUGE donation

CONOR McGREGOR and Dee Devlin have made a huge donation to the Crumlin Heart Centre.

On Saturday, a was set up by Sandra Devlin, the sister of McGregor's fiancee Dee.

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Named 'Sienna our Hero', its intention is to raise money for the Crumlin Heart Centre, where Sienna - Sandra's niece - attends.

In the three days since its establishment, the campaign was raised €10,175 to-date.

And €10,000 of that was donated by, according to the fundraiser page, 'Aunty Dee and Conor McG'.

And it has been confirmed to The Irish Sun that the donation did, in fact, come from the UFC star and his partner.

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The Crumlin Heart Centre is a state of the art unit dedicated to providing cardiac care to children up to the age of sixteen.

It is responsible for cardiac monitoring and assessment, cardiac investigations, post-surgery management, and non-surgical management.

HAPPY DAY

McGregor and Devlin were front row guests when Sandra got married to her husband Desmond last December.

McGregor shared a series of photos from the special day to Instagram, complete with message: "Love is in the air

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"Congrats Sandra and Dermot on your wedding! What a day, what a Christmas!"

Dee, who was a bridesmaid on the day, did likewise, saying: "Amazing day celebrating my sisters wedding! A day full of love

"Congratulations Sandra and Dermot!"

In the comments underneath Dee's post, Conor's sister Erin beamed: "congratulations Sandra x u all looked beautiful 😍"

Conor and Dee brought their kids along to the ceremony, and were suitably dressed for the occasion.

The former two-weight world champion was decked out in a stylish three-piece suit, while Devlin wore a pristine red dress, matching those of her fellow bridesmaids.

Basking in the romantic atmosphere, McGregor and Devlin shared a kiss at one point.

However, one young man stole the attention from all others, as their youngest son, Rian, stylishly dressed in a suit of his own, turned heads as he posed for a photo in the church's aisleway.