SUNRISE, FL - MAY 04: Lady Gaga performs onstage during 'The ARTPOP Ball' tour opener at BB&T Center on May 4, 2014 in Sunrise, Florida. (Photo by Kevin Mazur/WireImage)

Never mind that Lady Gaga herself has been accused of appropriating other divas' work. She nevertheless appeared to hurl a similar criticism in a tweet that manyagreewas aboutKaty Perry.

It looks like green hair and mechanical horses are the thing now 👀 — Lady Gaga (@ladygaga) May 8, 2014

Perry is the assumed target of the tweet because she dons a neon-green wig and rides across the stage atop an ornate fake horse during her Prismatic tour, which kicked off on Wednesday.

Gaga, whose ArtRAVE tour features its fair share of outrageous costumes, has those things in common with Perry. She sports a similar wig at her current concerts, and in 2013 she arrived at the American Music Awards on horseback.