The pictures, which also included nude shots of actress Vanessa Hudgens and US soccer star Hope Solo, appeared briefly on 4chan and Reddit, before being removed, celebrity gossip site TMZ reported.
BuzzFeed said that personal videos and photos belonging to actresses Aubrey Plaza, Mary-Kate Olsen, Hayden Panettiere and Leelee Sobieski were posted, in addition to previously unseen pictures of Jennifer Lawrence.
Hackers first released a trove of nude starlets' photos on September 1, after snatching them from Apple's iCloud in what the tech giant has called a "targeted attack."
The company has denied its cloud storage system was breached, suggesting that the celebrities had their accounts hacked by using easy-to-guess passwords, or by giving up their personal data to cybercriminals posing as Apple, a technique known as "phishing."