Kylie Jenner & Tyga Want To Have A Hotter Sex Life Than Kim Kardashian & Kanye West

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The competition between Kim Kardashian and Kylie Jenner is heating up! The sisters are friendly rivals when it comes to fashion and selfies, but HollywoodLife.com has the EXCLUSIVE on how Kylie now wants to have a hotter sex life than Kim ever had!

When it comes to sibling rivalry, Kylie Jenner, 18, plays to win! Kylie’s competition with big sis, Kim Kardashian, 34, has now taken a turn towards the bedroom. Kylie’s bae, Tyga, 25, better buckle-up, because HollywoodLife.com has EXCLUSIVELY learned that Kylie wants to have a sex life SO hot that makes Kanye West, 38, and Kim’s relationship look frigid! To hear more about Kim Kardashian, head over to iTunes and download the latest HollywoodLife podcast for free!

Kylie jetted off to Punta Mita, Mexico for a post-birthday vacation on Aug. 10. Along with jet-skiing and catching some some rays, Kylie and Tyga are getting “hot and steamy” while south of the border, a source EXCLUSIVELY tells HollywoodLife.com.

“They are really enjoying themselves and it goes without saying, their sex life is amazing,” the insider says, adding that now that Kylie has turned 18, she’s ready to take her love life to the next level. “Kylie’s telling Tyga she wants to get busy with him in more countries than Kim’s had sex with Kanye,” the source tells HollywoodLife.com. They’ve already checked Mexico off the list [and] they’re hoping Canada is next!”

Wow! Kylie has her work cut out for her, as Kim admitted that she and Kanye can have sex up to “500 times a day.” But, Kylie seems determined to one-up her sister when it comes to everything — from hair color to backsides to selfies. Kanye has tried to get Kylie to stop, but she’s dedicated to come out on top! Speaking of which, when it comes to having a more passionate relationship, Tyga’s on board!

“Kylie’s so competitive with Kim, but in this case Tyga likes the competition — for obvious reasons,” the source tells HollywoodLife.com. Tyga’s supportive of this attempt to have sex in every single country on Earth, as the source says he’s nicknamed their romance “the ‘International Sex Tour.'”

Kim Kardashian Not Ready To Hand ‘Sex Symbol Baton’ To Kylie Jenner: Her Plan

Kylie is gunning for Kim when it comes to sex appeal, but the woman who “broke the internet” isn’t going without a fight. “Kim is just not ready to hand off the sex symbol baton to Kylie,” a source tells HollywoodLife.com EXCLUSIVELY, adding that Kim is “fending off Kylie any way she can.” While Kim is happy to see Kylie grow up into a beautiful woman, Kim’s got some plans on how she’s going to stay the queen sex symbol of social media.

What do you think about Kylie’s “International Sex Tour,” HollywoodLifers? Do you think she’ll accomplish her goal?

— Jason Brow, Eric Mitchell reporting