Kim Kardashian is reportedly jealous of singer Jessica Simpson's new figure.

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The Keeping Up With The Kardashians star was able to quickly shed all of her baby weight and then some after giving birth to her first child, North West, nearly a year ago. But new reports claim that she still envies the With You singer's physique.

An insider revealed, "Kim has been watching Jessica's phenomenal body transformation very carefully, Jessica's latest triumphant pictures show that she's achieved a streamlined shape that has Kim in tears of envy."

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Despite losing 50 pounds recently, Kardashian can't seem to figure out how Simpson was able to shed her pounds. While Simpson is a spokesperson for Weight Watchers, Kardashian believes she got a little help elsewhere as well. Kardashian and her new husband, Kanye West, are determined to find out exactly what that is.

The same source continued, "Jessica's managed to get that lean look Kim's always dreamed of and Kim is convinced she's doing more than just Weight Watchers. [Kanye and Kim] are trying to recruit members of Jessica's team to find out exactly what she's doing."

Rumors also say that Kardashian thinks Simpson has been going extra hard to gear up for her wedding to Eric Johnson.

Whether the speculation is true or not, it's no secret Kardashian is comfortable in her own skin. She flaunted her own figure while on her second honeymoon with Kanye as she sported a sleek, white bikini in Mexico.

A separate source told Us Weekly, "Kim feels confident again. She worked really hard and is so motivated to stay fit."