In unboxing videos posted on social media, fans complained about branded hairpins and headbands that look like bra straps.
They have since gained millions of views online, with one user describing the pricing as “straight up disrespectful”.
Another commenter wrote on the company’s Instagram page: “US$140 for some bits and bobs is crazy.”
“Never bought from them and never will,” another said.
“I can find the same things in your calendar under my couch for US$0,” one wrote.
Another shopper suggested this did not make for a merry “SKIMPmas”.
Some social media users even said they felt the offer was less generous than that of discount retailers.
“Absolute joke. Temu sells better stuff for less,” one wrote, referring to the Chinese retail giant.
The Advent calendar also featured a furry compact mirror, a “squishy” toy and a tartan teddy bear keychain.
Valued at US$5 billion ($8 billion) in 2025 when it raised millions of dollars in new funding, Skims specialises in shapewear and has collaborated with sportswear giants such as Nike.
It isn’t the first time the brand has courted controversy, with some shoppers left unconvinced by the launch of its bra with built-in faux nipples in 2023.
Christian leaders have also questioned the rise of luxury Advent calendars in recent years.
Dr Gavin Ashenden, the former chaplain to Queen Elizabeth II, previously said the growing indulgence, which can now include jewellery, alcohol and even sex toys, was a sign of society’s “spiritual illiteracy”.
A Skims spokesman told several media outlets that its calendar “didn’t meet expectations” and the company had “personally contacted every customer” to offer either a full refund or credit to put towards other purchases if they wanted to keep the calendar.
In an email sent to shoppers, the firm said it was “truly sorry”.
It comes as the company is looking to expand into areas such as beauty, which Kardashian has suggested could come next year.
The Telegraph has approached Skims for comment.
Sign up to Herald Premium Editor’s Picks, delivered straight to your inbox every Friday. Editor-in-Chief Murray Kirkness picks the week’s best features, interviews and investigations. Sign up for Herald Premium here.Have you been overcharged, struggled to get a refund, dealt with poor customer service or spotted something consumers should know about? Get in touch with us in the comments or email consumeraffairs@telegraph.co.uk*.