Lady Gaga Reignites Feud With Katy Perry. See What Gaga Posted on Twitter About 'Dark Horse' Singer

Uhh-ohh looks like Lady Gaga has is out for the "Dark Horse" singer, again.

Katy Perry kicked off 'The Prismatic World Tour' last night to rave reviews from fans and critics, but it appears that not everyone is happy with the show.

Mother Monster tweeted about her dislike over a few things that she spotted during the show, i.e. horses and green hair.

"It looks like green hair and mechanical horses are the thing now."- the "G.U.Y." singer posted.

During the performance for "Dark Horse," Katy comes onto the stage riding on the back of a what else... a horse, I mean you wouldn't come onto the stage on the back of some other animal when the song is about a horse, would you?

Gaga think that b*tch stole her move, having rode in to American Music Awards Red Carpet on horseback in 2013.

As far as the green hair goes, both ladies have been through a multitude of different hair colors; Gaga previous sported green hair while Katy's current hair is describes by the singer as "smile green."

We're not sure if the tweet is just poking fun or if it's rooted in jealous over the fact that horses and green hair might now become a thing, after Gaga tried to make them popular a few months back.

The divas have been pinned against each other in the music industry since releasing singles, "Roar" and "Applause" on the same day back in August. They then went on to release their new albums within three weeks of one another, and now are going head-to-head once again, both embarking on world tours during the same week.

Gaga who has been adamant about keeping the relationship between the two civil and friendly, has often been an advocate for ending bullying between the pop stars respective fan bases, katycats and little monsters, so we are a little confused by her tweet.

What do you guys think? Was Gaga making a jab at Katy, or was she just joking with the singer? Let us know in the comments below.