United Kingdom, Jan. 5 -- Zion Foster has shared a touching tribute to his twin daughters after fiancee Jesy Nelson revealed they had been diagnosed with a rare genetic condition.

The former Little Mix singer - who gave birth to daughters Ocean Jade and Story Monroe prematurely last May after a difficult pregnancy - revealed on Sunday (04.01.26) that her kids have SMA1 (Spinal Muscular Atrophy), which she described as "the most severe muscular disease", but despite the tots' difficulties, their dad revealed they are "still smiling".

Zion shared a photo of the twins in a stroller, with breathing tubes attached to their faces, and wrote on his Instagram Story: "Still smiling through all the challenges.

"Daddy loves you so much."

Jesy, 3...