It's Sports Illustrated's 50th anniversary, and Victoria's Secret model Lily Aldridge has graced the magazine's cover in a topless photo with two other models- Nina Agdal and Chrissy Teigen.

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The cover was released on Thursday night on the magazine's Sports Illustrated Daily Blog.

28-year-old Aldridge revealed what it was like to be on the cover for the special anniversary.

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"It's the most incredible honor to be a Sports Illustrated cover model," she said.

Her first cover appearance was back in 2002.

The magazine's cover shows Aldridge between Agdal and Teigen as they stand in water. They are all topless in a back shot as they have their hands around each other's waists, displaying wide grins.

Teigen revealed that she never expected to land on the cover although she has appeared in the magazine five times before.

"It's the ultimate surprise, and it's the best feeling in the world right now," she said.

Teigen also revealed that the reason for their smiles on the cover is because they all had a great time and reportedly bonded together.

"The smiles that you're seeing are genuine," she said. "We had a good time, and it shows in the picture."

Being on the cover for the 50th anniversary edition is likely to further increase the star profiles of the three models, something Aldridge said is exciting for all of them.

"Getting to be on the cover, we're all going to be household names," Aldridge said. "It's incredible what it does for your career and where it can take you."