Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our thesis.

What: Shares of Michael Kors Holdings Limited (NYSE:CPRI) were looking as stylish as ever, climbing as much as 22% and finishing up 17% after another blockbuster earnings report today.

So what: The fashion house was strutting its stuff down the runway once again, posting earnings per share of $1.11 on expectations of $0.86, while revenue jumped 57% to $1 billion, crushing estimates of $860 million. Comparable sales also sped ahead 28%, showing that growth came both organically and through expansion. The report was all the more impressive considering many retailers had complained of a poor holiday selling season, but Kors clearly thrived in spite of the broader weakness. CEO John Idol said the company had an "outstanding holiday season."

Now what: Perhaps most indicative of Kors' dominance and brand power is its huge operating margin, which hit 33.9% last quarter, an improvement over 32.2% a year ago. That's a sign of pricing power, and it's exactly what investors want to see in a high-end brand like Michael Kors. Fashion is notoriously fickle, but Kors is indisputably a company on the rise as it consistently blows earnings estimates out of the water. Even though shares are up over 60% in the past year, I'd expect them to keep moving north.

Jeremy Bowman has no position in any stocks mentioned. The Motley Fool recommends Michael Kors Holdings. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.