Former X Factor contestant Tom Mann has vowed to make his late fiancee proud after revealing she had tragically died on their wedding day.

Tom, who appeared on the singing contest while competing with band Stereo Kicks back in 2014, broke the devastating news of Dani's death on Instagram on Monday and promised to be the best dad he can to their eight-month-old baby son.

He pledged to "use any strength I can muster for our little boy" after revealing his wife-to-be had passed away on Saturday.

Sharing a sweet black-and-white image of their son Bowie and his wife to his Instagram, he wrote a lengthy caption, which included his heartfelt promise about their child.

It read: "I am completely broken trying to process this and I honestly don’t know where to go from here, but I do know I need to use any strength I can muster for our little boy.

"I will not be a mark on the parent that you had already become but I promise I will do my everything to raise Bowie just the way we always wanted.

"I promise you he will know how amazing his mummy was. I promise to make you so so proud."

He started his post by telling his followers his "best friend" Dani died in the early hours of Saturday morning, 18th June.

"I feel like I have cried an ocean. We never made it to the alter; or got to say our vows, or dance our first dance, but I know you know that you were my entire world and the best thing that has ever happened to me, Danielle."

He described her as "the most beautiful person inside and out" and explained that while he will try to find peace in comments from his friends and followers, he will be "grieving for a very, very long time".