.
One of the items was a $99 waffled rouched tank top by The Range, which Lee managed to fit into given the stretchy material.
“I never buy my clothing in extra small, so if I were to buy this I probably would have bought just a small," the YouTuber said.
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"If I wanted it to fit a little bit looser than tight, I would have bought a medium."
Also in extra small was Kendall's Anine Bing tiger print skirt which Lee purchased for $195.
"I will be shocked if I can get this zipped, I will be truly shocked because this is tiny," Lee said, while unboxing the item.
Despite her concerns, the YouTube personality fit into the "snug" skirt.
“I’ll be honest: could I use a size up? Yes. But, can I get in this and does it fit? Yes,” Lee said.
Lee's favorite piece was a Zimmerman dress which cost her $275 and also came in a size extra small.
While most of the clothes showed little evidence of previous wear, the "salmon peach colored" dress had a small rip at the hem.
"No wonder it's worn so much, because of how pretty it is," commented Lee as she modelled the outfit.
Lee also tried on a $95 hat by the brand Muhlbauer which she likened to a "golf hat."
Lee was surprised by how much she liked the hat, saying: "Honey, I'm wearing this out and I will not be stopped."
The final look was a pair of cow-print Eckhaus Latta jeans sold by Kendall for $250.
"They're a size 26, but these pants look like they'd fit a child," said Lee, attempting to stretch the waist.
"I would literally faint if these close on me because they have no stretch."
She continued: "You're going to see me explode out of these."
While attempting to button them up, Lee began jumping up and down and crying: "I can't get them on."
"I think my intestines are panicking," she joked as she gave up her effort to fit into the jeans.
"These don't fit. They're a size 26, and I guess that's not my size," Lee said, before saying: "Kendall's waist is half the size of mine, so they're probably loose on her."
In total, Lee bought five pieces from Kendall's used collection which she called "more affordable than the other sisters'."