Instafamous pup and very good dog Chloe the Mini Frenchie has died, Chloe's human, Loni Edwards, announced via Instagram on Wednesday.

"She was an incredible pup and we're going to miss her so, so much," she wrote.

SEE ALSO: Chloe the Mini Frenchie recreates 8 iconic Oscar looks

A post shared by Chloe The Mini Frenchie (@chloetheminifrenchie) on Oct 25, 2017 at 3:05pm PDT

According to the post, Chloe was recovering well from a routine procedure on Wednesday, and was being held overnight for "observation and extra safety." While at the animal hospital, a mistake was allegedly made with an oxygen mask, which led to lung damage and put the poor pup into cardiac arrest.

ribbit 🐸 A post shared by Chloe The Mini Frenchie (@chloetheminifrenchie) on Aug 8, 2017 at 5:29pm PDT

"The staff there erroneously directly attached the oxygen to her, the pressure of which blew out her lungs, lead to multiple cardiac arrests and ultimately killed her. She fought so, so hard to stay with us, but the fatal error was simply too much for our little nugget to overcome," the post reads.

The Blue Pearl Vet in Manhattan was unable to immediately respond to Mashable's request for comment and additional information.

Chloe's petite size and adorable nature launched her to internet fame in recent years, amassing over 179,000 Instagram followers, and a Facebook page with 53,759 likes. While her small size (Chloe was about half the size of a normal French bulldog) made her unique from the plethora of Instagram dogs out there, Edwards often dressed her pooch in adorable outfits and costumes.

cupcakes in bed because #birthdaymonth ☺💕🎉 loving @petsmart's new birthday collection now available at #PetSmart + petsmart.com! #ad #birthday A post shared by Chloe The Mini Frenchie (@chloetheminifrenchie) on May 15, 2017 at 4:54pm PDT

NYC friends! Join me at an exclusive screening of ABC’s new show #DownwardDog — come watch the first episode and hang out with me! Limited spots available, RSVP at the link in my bio. Tune in to the special premiere of @downwarddog_abc on May 17. #ad A post shared by Chloe The Mini Frenchie (@chloetheminifrenchie) on May 2, 2017 at 12:53pm PDT

Chloe was just 4 years old, and lived in New York City where she often worked with various fashion brands. According to Chloe's website, the pup used her celebrity status to work with charities and benefits, including dog purses that hold poop bags and a luxury scarf line, both of which went to benefit the Humane Society of NY.

Chloe The Mini Frenchie and owner Loni attend Paul Frank Industries Kid's Show at Hudson Mercantile on September 10, 2015 in New York City. Image: Jenny Anderson/WireImage

Chloe was slated to appear at PetCon next month in New York City.

Given the suddenness of Chloe's passing, fans were upset while mourning the loss on social media.

CHLOE THE MINI FRENCHIE FCKN DIED I AM BROKEN — lily (@lilyanx3) October 25, 2017

Chloe the mini Frenchie died today. Cherry on top to the worst year ever in US history. — Michelle Pliskin (@shellyeaa) October 25, 2017

Chloe the Mini Frenchie passed away & I don't know if my heart can handle it — Rachel Taylor (@itsRayTay) October 25, 2017

So sad to hear that Chloe the Mini Frenchie passed away. Lots of hugs to her family. — Mai Koythong (@kantayams) October 25, 2017

Chloe the mini frenchie passed away today. No. It's not a good day. — ava (@avac_) October 25, 2017