is worried his tight 'Dancing on Ice' costumes have left him infertile.The singer - who got to the semi finals of the ITV celebrity talent show - is keen to start a family with fiancée Suzanne Mole but fears his Lycra outfits could ruin his plans.Gareth, who was born in Bradford, Northern England, said: "I hope the costumes haven't affected my baby-making abilities!"I do want a big family. I think it's my northern mentality and the way I have been brought up."Gareth, 23, proposed to Suzanne, 32, on New Year's Eve (31.12.07) and says he is keen to tie the knot as soon as possible.He added: "We got engaged with a view to getting married fairly soon, so hopefully it will be this year. But there's no actual date set so far.Suzanne's dream is to have a big, fairytale wedding with a big meringue dress. I would be fine with just a simple registry office ceremony!"