Arlenis Sosa (born 1989) is an Dominican model. She appeared in the 2008 Victoria's Secret Fashion Show.

She was born in Montecristi, Dominican Republic, she moved to New York when she finished high school. Arlenis was discovered when she was walking with her family, and a designer found her and told her she could be a model. In March, she just walked into Marilyn Models and was signed on the spot.

Two weeks after she signed, she booked her first editorials for major magazines Vogue and Vogue Italia. She since has been featured in editorials and articles in Teen Vogue, Interview,Harper's Bazaar. Her runway debut was at the Banana Republic F/W 08, and later walked for the Dior Resort show, and opened for Oscar de la Renta. She dove head-first into the fashion industry. "Anna Wintour sent me to the Met ball the first week I arrived in New York - I felt like Cinderella!"

Fashion shows are the main moneymaker of Arlenis. She has walked for some of the most prestigious designers and Fashion Houses in the world, including Ralph Lauren, Michael Kors,John Galliano,Emanuel Ungaro,Hussein Chalayan,Alexander Wang,Jean Paul Gaultier,Hermes,Bottega Veneta,Anna Sui,Carolina Herrera,Donna Karan,Tsumori Chisato,Jason Wu, Carlos Miele, Derek Lam, Isaac Mizrahi, Matthew Williamson, Narciso Rodriguez, Ruffian, Tadashi Shoji,Iceberg, Mariella Burani and Diane von Furstenberg. She participated in 2008's Victoria's Secret Fashion Show. Sosa, who is known for her full lips, became the face of Lancome in September 2008. She was most recently featured as part of People Magazine's 100 Most Beautiful List.