Holly Willoughby is getting ready to return to work following the summer holidays, and her three children are preparing to get back to class for the new school year.And to mark the last day of their time together, Holly and her family got creative with tie-dye, and the This Morning star was especially impressed with how her youngest son Chester's creation turned out.MORE: Holly Willoughby shares rare photo of daughter Belle doing her makeup VIDEO: Holly Willoughby announces exciting baby