KIM Kardashian is struggling to keep her pants from falling off as her slim waist disappeared in her sparkling birthday outfit.
The Kardashian star wore a pair of low-waist pants and a teeny tiny triangle bra top covered in silver glitter for her 42nd birthday.\
Kim Kardashian appeared to struggle to keep her pants from falling down off her tiny frame
As Kim celebrated her birthday last night, she appeared to be continuously pulling up the waistband of her pants in videos
Kim posted plenty of Instagram videos to her Story to share her wild birthday celebration.
Although in many clips of the video, Kim appears to be struggling to keep her pants up on her hip.
As she was boarding her sister Kylie Jenner's private jet and talking to friends and family, she often appears to be pulling up the waist band of her pants.
The sparkling trousers appear to be gaping at her waist, even as they sit at the widest part of her thighs.
However, Kim was not afraid to share her food indulgences over her birthday evening out.
She posted plenty of videos of her chowing down on burgers, Krispy Kreme donuts and taking jello shots.
Fans are continuously concerned about Kim's shrinking frame.
One fan posted on Instagram, replying to a video of Kim pulling up her loose pants: "That body is sickening."
Another said: "No, prefer the old Kim. This is too skinny."
Yet a third commented: "Ew, someone feed her, stat."
A fourth posted: "Both her and Khloe are dangerously close to being unhealthily skinny."
Finally a fifth shared: "She looks sick and she is not real. Full of plastic - nothing natural about that!"
Fans have become concerned with Kim's weight ever since she wore Marilyn Monroe's famous dress to the Met Gala earlier this year.
In a May interview with Vogue, Kim admitted: "I tried it on and it didn't fit me. I said, 'Give me three weeks.' I had to lose 16 pounds.
"It was such a challenge. It was like a [movie] role ... I haven't had carbs or sugar in about three weeks," she added.
After she dropped pounds to wear the dress, the TV personality continued to lose weight because of her new lifestyle.
Kourtney Kardashian, 43, has reportedly shared her concern over the thinning looks of her siblings.
While Kourtney has embraced her curvy female figure, a source close to the TV personality exclusively told The Sun U.S. that she reportedly thinks her sisters have gone too far with their skinny frames.
Kim has lost over 20 pounds since the start of the summer, while Khloe Kardashian, 38, dropped 60 pounds over the past four years.
Unlike her sisters, Kourtney has gushed over her weight gain after undergoing her intense IVF treatments.
The Kardashian friend claimed: "Kourtney likes to point out that you can't go near either Kim or Khloe mid-afternoon as they are both so hungry they snap at anyone.
"She is convinced that's why both her sisters are single because no man can tolerate their strict daily plans and twice-a-day workouts."
The insider continued: "She says neither one of them ever has fun because they are counting calories so much - she feels it's impossible to ever be in a happy relationship like that."
Meanwhile, Kim shared about her disaster emergency private jet landing that ruined her birthday plans.
The Kardashian star's birthday crew had plans to take her out for dinner at Carbone and a private concert from Usher when plans went south.
Kim boarded her 25-year-old sister Kylie Jenner's private jet to head to Las Vegas for birthday activities when the aircraft was forced to turn around due to harsh weather conditions.
The birthday girl documented the night on her Instagram and told her fans the night ended in an In-N-Out burger trip back in Calabasas.
Intense winds in Las Vegas prevented the birthday crew from landing to go have their wild night with Usher.
According to The Weather Network, winds in Las Vegas peaked at up to nearly 30mph last night.
Kim posted on her Instagram Story last night to share the bad news with her fans.
She said: "The plane couldn't land due to the wind so it looks like our Carbone party and Usher concert isn't happening and we are heading back home."
Kim said they made the most out the evening as all of her friends took to In-N-Out to put in a massive dinner order.
Their plans switched over to a party bus as they all continued to take jello shots and finish their fast food take-out dinners.
Although Kim didn't hesitate to share about chowing down on burgers, donuts and more
Fans have been continuously concerned for Kim's shrinking waist and beg her to gain weight
Fans have been concerned over Kim's rapid weight loss since she dropped 16 pounds to fit into her Met Gala dress