Demi Lovato is back on social media and "more honest than ever" after quitting her accounts for a day.

The Cool for the Summer star took to Twitter on Monday (20Jun16) to announce her intention to disconnect from both Twitter and Instagram after Internet trolls took aim at her over the weekend (18-19Jun16).

But a little over 24 hours later, Demi was back in action and promised to have no filter on her future posts this time around.

"F**k this.. I'm back b**ches. And I'm coming back more honest than ever," she wrote before tweeting out an emoji of a smiling face with sunglasses, a middle finger and a mischievous face with devil horns in another message.

The pop star added that a big reason for her return to social media was her fans, writing, "I love my Lovatics too f**king much... to leave them over some lame a** haters.. What was I thinking?!"

Demi's social media break was prompted after she received nasty backlash from angry Mariah Carey fans, who were defending their idol after Demi criticized her on Instagram.

Fan furor began when Demi commented on an Instagram meme comparing Mariah to Ariana Grande, with the caption, “When you order it online vs when it arrives", which suggested the user felt Ariana cannot match up to Mariah.

Demi wrote, "You got it the wrong way around honey," hinting that she preferred Ariana to Mariah, and she later explained her remarks by criticizing Mariah for the way she treats people.

"Mariah is a legend and is so talented but constantly disses people," she wrote in an Instagram comment. "It’s nasty the way she treats Jennifer (Lopez). Ari (Ariana) did nothing wrong."

Mariah famously told the paparazzi, “I don’t know her," when asked about Demi's pal Jennifer in the early 2000s.

And Jennifer has since responded to Demi's recent online feud, telling entertainment news show Access Hollywood on Tuesday (21Jun16) that social media and spats on the platforms don't even matter that much to her in the grand scheme of things.

"We're friends," Jennifer explained. "She has to do what she wants to do and I do what I do... I was born at the time where (social media) is not my whole life. But I understand that it exists and I am a part of it. Whereas I think the younger generation, it's so important to them, and it's not as important to me, in that sense."