After countless trips down the catwalk, we suppose Jessica Stam knows a thing or two about clothing.

So it's no surprise that the model is officially adding "designer" to her resume.

"Just finished my first design meeting with @Rachel_Roy. I'm doing a capsule collection with her for Macy's. So much fun sketching designs!" the Canadian beauty divulged via her Twitter page.

Turns out Stam has a history of partnering with designers: She previously teamed up with Rag & Bone on a few pieces for the label's Spring 2010 collection, but the collaboration was more about using Stam's style and input as inspiration.

Now that Stam's also sketching, could she turn full-fledged designer? We think having Rachel Roy at her side is a definite plus, and Roy's wearable feminine designs, tempered by Stam's casual style, could be just the perfect match.

But don't think Stam's giving up modeling anytime soon -- the Nina Ricci campaign girl is itching to hit the catwalk. "I'm so jealous of all my girls in Milan," she tweeted. Cannot wait to get to Paris to get back on the runway!!!"

Stam isn't the only sketchy model -- Coco Rocha is also working on a line set to debut this fall.