Coach's pain may be Michael Kors' gain, an expert said on Tuesday.

Shares in affordable luxury retailer Coach were trading 7 percent lower on Tuesday after it reported that comparable-store sales fell 23 percent in its most recent quarter. The brand has gained little momentum even as it introduced new designs and merchandise, said Stacey Widlitz, president of SW Retail Advisors and a CNBC retail analyst.

With Coach struggling to gain "traction," battered Michael Kors would make a better buy, Widlitz contended.

"I would argue that this is a great opportunity to take a look at Kors," she said in a CNBC "Power Lunch" interview.

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Shares in Michael Kors have slipped 17 percent this year. With that slide, the stock sits at an appealing price, especially as Coach has difficulty drawing customers, Widlitz contended.

Michael Kors was trading slightly lower on Tuesday.