(Cover) - EN Showbiz - Lady Gaga has hit out at celebrities who are "bullies".

The singer seemed to be upset about famous contemporaries being rude on micro blogging network Twitter, although it is not clear who in particular she was referring to.

Gaga has urged stars to be more thankful for their fortunes and consider all entertainers as equals.

"When did celebrities become such bullies. #BeGrateful #We'reAllEqual," she tweeted. "#BreedCompassion Twitter. Im making a twitter queen request to all users! :) (sic)"

Gaga also asked her huge number of followers to work towards a better world where people treat each other with kindness.

The 26-year-old songstress is known for her crusade against bullying and, earlier this year, launched the Born This Way Foundation. She was also named one of the world's most influential people by New York City magazine Time.

"if we treat each other with equal respect were working towards that perfect world. Instead of instigating tension (sic)," she tweeted. (C) Cover Media