WATCH: You'll never guess why this boob-bouncing video has gone viral…oh wait

THIS clip has gone viral for two very big reasons.

Lindsey Pelas has risen to fame as Instagram’s latest starlet and it’s not hard to see why she’s quickly amassed 3.5million followers.

The blonde babe – who describes herself as “genetically gifted” and stresses that her chest is completely natural – began modelling in college before being snapped for numerous magazines including Playboy.

While the 24-year-old fitness fanatic isn’t shy about flaunting her fabulous figure and ample assets on the social media site, there’s one video in particular that’s got everyone talking.

JOG ON: Lindsey Pelas caused a stir with her braless sprint

Leaving her bra at home, Lindsey flashed plenty of underboob as she jogged along wearing nothing but a pair of white string bikini bottoms and a loose-fitting crop top.

Lindsey said she was “running away from haters” in the scenic park, but her jog proved popular because the slow-motion clip has racked up more than 78,000 likes.

Yesterday Lindsey publicly hit back at “slut-shamers” after she received a torrent of abuse from online trolls over her sexy photos.

Leaving her bra at home, Lindsey flashed plenty of underboob as she jogged along wearing nothing but a pair of white string bikini bottoms and a loose-fitting crop top.

Lindsey said she was “running away from haters” in the scenic park, but her jog proved popular because the slow-motion clip has racked up more than 78,000 likes.

Yesterday Lindsey publicly hit back at “slut-shamers” after she received a torrent of abuse from online trolls over her sexy photos.

The star said she’s been called a w**** and a b**** but she refuses to stop flaunting her killer curves.

Lindsey said: ”If it makes me feel good to take a cute picture of myself, if I feel good that I have cleavage, if I like my shirt, I'm going to do what I want to do, because it's natural to me.

"I'm not trying to date anyone, I'm not trying to sleep with anyone.

"I'm certainly not trying to make you angry, so I don't understand where the criticism has to come from.

"Why does what I do offend anyone else, ever?"

All I wanna do is get high by the beachh ���� #fridayvibes #moody #lanaovereverything photo @torreywest

A photo posted by lindsey (@lindseypelas) on Dec 11, 2015 at 3:34pm PST

She told Cosmopolitan: "If I were 5ft10in flat-chested and not as curvy my photos would be artistic, but when I'm in them they become vulgar and pornographic and overly sexual.

“Can't my body be artsy and beautiful in its natural way like everyone else's?"

Lindsey also spoke candidly about some of the perils of having such huge boobs.  She revealed that you end up looking like a porn star by accident and “boob sweat” is a daily occurrence.