US fashion ecommerce is maturing just as AI, social commerce, and resale gain traction. Slower growth and costly returns are raising the stakes, reshaping how consumers discover, decide, and buy.

TikTok continues to attract a lot of attention, both good and bad. The hype around its heavily engaged and coveted Gen Z audience is real. But concerns over alleged privacy violations have made it a target for regulators, and user trust of the platform has suffered as a result.

Moving across the US-Canada border can be the first step toward international expansion for retailers. Canadian brands like lululemon athletica and Aritzia are thriving in the US. Meanwhile, US-based companies Lowe’s, Nordstrom, and Bed Bath & Beyond recently announced they were leaving Canada. And let’s not forget Target’s famous Canadian failure. Here’s a look at how brands on both sides of the border have fared, and the lessons you can learn from them.