Jason & Molly Mesnick's Sweet & Serene Nursery

Interior designer (and Bachelor friend) Jillian Harris takes PEOPLE on a tour through the reality stars' "airy" room for baby Riley


"I really wanted to do a lot of vintage, but Molly wanted fresh and new," Harris shares. "So we partnered with Wayfair Furniture, brought a pair of [Jason's 8-year-old son] Ty's shoes into the mix, added photos of Molly and Jason and a shadow box of items Jason had given Molly to add some character to the room."