She doesn't hate any of them She doesn't care enough to hate, that's all.

Katy, Gaga seems too pretentious to let someone overshadow her, and Katy did that, Madonna is clearly her main influence.

That's hard to choose actually.

Katy

none of them, she doens't have time to deal or care with such things as hating on someone just because they copied it her or used her as a promotional tool, she's simply above that

This.

I don't think she hates Katy, I think she looks up to her.

.

Katy lol

Then why doesn't she hate Beyoncé? I'm sure you have a logical explanation, and I'm curious to hear it.

Madonna, because Madonna's Gaga's idol, and the love she had for Madonna wasn't exactly mutual.

How ironic, considering Gaga used not only Katy but Madonna as well to promote Do What You Want

None. Gaga respects her elders.

Why would Gaga hate Katy? I'm sure deep down Gaga wishes she had accumulated all those massive hits but I doubt she has a hatred for Katy. I doubt she hates Madonna too and was likely just really disappointment with her and annoyed with Madonna's hardcore fans.

Perez Hilton...I'd she hates him. Probably Azealia Banks too. The critics who critic her too. Gaga seems over all that nonsense though

Katy, the desperate tweets and shade proves it.

yeah because 2 tweets made the single sell million copies and gave it 80m AI ... utried tho

Let us not forget how Gaga went on a desperately emotional rant on twitter because Roar went #1 , while Applause did not