Yoga apparel retailer Lululemon Athletica’s net profit more than doubled in the three months ended May 3 — surpassing Wall Street expectations.

The company said Tuesday that earnings in the fiscal first quarter swelled to $47.8 million, or 34 cents a share, from $19 million, or 13 cents, last year as profit margins increased.

Lululemon shares spiked 11 percent on the news — to $68.27. Revenue climbed 10 percent, to $384.6 million.

The second quarter has gotten off to a good start with the spring collection as well as new and existing swimsuit styles, which are only available at select stores, the company said.

“Our team’s solid performance resulted in another improving quarter — coming in ahead of our revenue expectations,” Laurent Potdevin, Lululemon’s chief executive, said in a statement.