As the reality star let loose and swayed to Daft Punk's 2000 hit One More Time, her female pal could be heard musing that she had 'never' seen her pal 'drink like this.'
'You got to live your life, this is the year you got to live your life,' the KKW beauty founder replied, before shooting a peace sign at the camera and fixing her hair.
In the brief video, the mother-of-four celebrated her special day by throwing her arms up and sang along to the electronic track, while staying on a private island.
Kardashian appeared to be having the time of her life, as she freely jumped in the air wearing a plunging white dress, which showcased her ample cleavage and tan skin.
She paired the skintight frock with a glamorous hair and makeup look, which included a sultry smokey eye, false eyelashes and waist-length hair extensions.
The duo were drinking chilled shots and propped Kardashian's phone on the table to capture their inebriated shenanigans.
'Wait, does drinking make you a better dancer?' the wife of Kanye West captioned her latest post, which has been viewed 719,500 times in two hours on Saturday.
Kimora Lee Simmons joked in the comment section: 'I think maybe yes!'
While Kardashian has been about steering clear of alcohol over the years, her youngest sibling Kylie Jenner commented this was her 'fav' version of her big sister.
Kim has received intense criticism on social media users for traveling to a private island, amid the COVID-19 pandemic, for a lavish birthday celebration with friends and family.
However, Kim has continued to post throwbacks from the trip, which comprised of 30 people flying to a private resort in French Polynesia on October 20 in a charter Boeing 777, according to Page Six.
She and her family and friends stayed for five days at the Brando Resort near Tahiti, where rooms can run up to $20,000 per night, on the private island previously owned by the late Marlon Brando.
Kim initially shared photos of her surprise trip on Instagram and Twitter, but she instantly sparked a significant backlash.
Meme creators went to work, posting movie stills from sinister or comical island locations, or clueless displays of extreme wealth, to accompany her initial tweet: 'After 2 weeks of multiple health screens and asking everyone to quarantine, I surprised my closest inner circle with a trip to a private island where we could pretend things were normal just for a brief moment in time.'
Some critics were angered that the reality star and her friends and family had traveled as COVID-19 cases were reaching alarming levels throughout the US, and that they socialized without a single mask in sight.
Others questioned the display of wealth as many Americans, and people across the globe, have lost their jobs or had to make due with less due to economic devastation brought on by the pandemic and government inaction.
Missing from her recent beach photos was Kim's husband Kanye West, 43, who gifted Kim a hologram of her late father Robert Kardashian.
