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 wanted to keep the room airy, but with a bit of an edge, so that's why we decided to use the herringbone wallpaper," Harris explains. For the oversize M, the designer tapped her creative assistant Dana who used Christmas lights to make it pop. "We saw a nursery that had a marquee sign similar to this, and we tried to find one, but they were too expensive, and there wasn't a huge budget," she says. Another D.I.Y. Project? The canopy above the "M," which was hung using a toilet paper holder!

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