Gary Barlow was among the celebrities to send his sympathies to Chrissy Teigen and John Legend as the couple come to terms with losing their baby son Jack.MORE: Chrissy Teigen opens up about 'really hard' conversations with her son and daughterThe Take That singer, whose daughter Poppy was delivered stillborn in 2012, publicly reached out to the grieving couple on Twitter, writing: "Sending all my love, strength and best wishes @johnlegend @chrissyteigen no words can make the pain any