• Kylie Jenner 's makeup brand, Kylie Cosmetics , excelled in its first quarter on Ulta 's shelves.
  • The brand has seen very strong sales since Ulta began selling Kylie Cosmetics lip kits in stores as part of an exclusive partnership in mid-November.
  • Kylie Cosmetics drove strong traffic to stores, attracting more diverse and younger shoppers, according to Ulta CEO Mary Dillon.

Ulta's deal with Kylie Cosmetics is already paying off.

The celebrity entrepreneur's cosmetic line saw "very strong sales" in its first quarter on shelves, Ulta CEO Mary Dillon said in a call with investors on Thursday.

Kylie Cosmetics drove strong traffic to stores, Dillon said, in a quarter in which Ulta's comparable sales grew 9.4% in the quarter, versus the expected 7.9%. The makeup brand also attracted more diverse and younger shoppers to Ulta locations.

Read more: Ulta jumps after earnings, sales, and guidance top expectations

In mid-November, Ulta began selling Kylie Cosmetics lip kits, making the retailer the only place where customers could buy the brand offline. According to Dillon, the lip kits immediately began flying off the shelves.

"We were essentially out of stock for a few weeks at the end of the quarter," for certain Kylie Cosmetics products, Dillon said.

Items are now back in stock, and the company has addressed inventory issues, Dillon said. Ulta is also preparing to launch new Kylie Cosmetics products, including eye shadow palettes and more lip products.

Ulta reported revenue of $2.12 billion in the quarter, beating analysts' expectations of $2.11 billion.

Earlier in March, Forbes reported that Kylie Jenner became the world's youngest self-made billionaire, fueled by Kylie Cosmetics' revenue growth of 9%. The growth was fueled by the Ulta partnership, which brought her products to the retailer's more than 1,000 US stores.

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