Speaking with Us Weekly, the 32-year-old model discussed the hot topic of Chyna and Kardashian's relationship, saying, "I love them together...They are super silly together."
"They literally crack up and laugh all day long, like it's not just a front for social media," Rose said at the Zoobe 3D Character Launch at the South By Southwest festival.
Chyna has long been at odds with the women of the Kardashian family, especially Kylie Jenner. Jenner began dating Chyna's ex-fiance Tyga shortly after their split in 2014, prompting occasional backlash from Chyna through social media.
The 19-year-old cosmetics mogul and Tyga have been presumably dating since late 2014, although they did not go public until March of last year.
Kardashian became romantically linked to Chyna shortly after being diagnosed with diabetes after a brief hospital stay in late December. The couple first sparked relationship rumors the following month.
"They're really supersilly, and they love each other, and they have a blast together," Amber Rose added of the couple's relationship. "I'm really happy for her. She deserves it."
Kardashian recently deleted the entirety of his Instagram profile save three photos, two of which feature girlfriend Chyna.
On Tuesday, he posted a no-makeup photo of his significant other alongside the caption "Young" and devil emojis.