Kim Kardashian may have to watch her back. The sexy reality star's half-sister, Kendall Jenner, is looking increasingly like her. On Thursday, Jenner raised plenty of eyebrows after posting a photo on Instagram. In the pic, the 18-year-old resembles Kardashian, with similar makeup, thick brown eyebrows, nude lips and tousled dark hair.

While Kardashian is known for her voluptuous figure and has been in a number of magazines, Jenner is also getting recognition worldwide based on her physique. The young model, who has been rising in the modeling world lately, will be featured in the upcoming issue of Vogue Paris. During Paris Fashion Week in March, Jenner walked the Givenchy catwalk in front of Anna Wintour, Rihanna and Kanye West. She also walked the coveted Chanel show and in Marc Jacobs' show during New York Fashion Week. The celebutante has been signed since November to the Society Management, which also represents Liu Wen and Adriana Lima. Prior to that, she worked with Wilhelmina.

In October, Jenner became the latest face of Agua Bendita’s swimsuit collection. She showed off her slim physique in an array of colorful bikinis and one-piece swimsuits for the Colombian swimwear brand's new campaign. Jenner was in elite company in the shoot, alongside Candice Swanepoel, a top Victoria's Secret model.