Sian Welby is the new face giving This Morning hosting a go this week, alongside Dermot O'Leary, and with viewers thrilled with her performance, fans have been left wanting to know a little more about the petite Capital Breakfast show host with the big personality. Dubbed 'the front runner to take over from Holly,' the 37 year old will already be recognisable to some viewers. She's often spotted presenting showbiz segments and competition slots on the show and more memorably, hosted Sian's Shack last year, giving viewers all the backstage gossip from I'm a Celebrity.