Fans of Beyoncé are upset after the entertainer revealed that she have turned vegan yet again, with many taking to the social media to express their disdain towards the singer.

The Beyhive—Beyoncé's fan base—are mad particularly because of a teasing tweet from ABC's Good Morning America where the singer supposedly has "something amazing she wants you to know."

Majority of the fans speculated some good news: from a new pregnancy to an upcoming concert or album that's soon to be released, with some taking to Twitter to make their guesses public.

"I have a feeling Beyoncé's announcement is gonna be either her having a second baby or releasing her 6th album along with a new world tour," @JDudleyRowe wrote, while @royaltyaaliyah claimed that the news is most probably about the former.

@ElusiveEraNow tweeted: "If beyonce's announcement is a new album released on Tidal I'm going to probably buy Tidal lol," and put hashtags "pleasedontletthathappen" and "gmabeyonce."

But, much to the fans dismay, the "Drunk in Love" singer's announcement was not close to any of their guesses. Apparently, Beyoncé is now exclusively on a vegan diet to keep her weight on check.

"I am not naturally the thinnest woman. And I have struggled since a young age with diets. And finding something that actually works and actually keeps the weight off has been difficult for me," she revealed on Good Morning America on Sunday.

According to GMA, the singer is trying out a plant-based diet from "The 22-Day Revolution," a book authored by physiologist Marco Borges. The plan, says the report, revolves in the idea that it only takes 21 days to either make or break a habit.

Borges reportedly crafted a meal delivery system for the singer which most probably would entail avoiding foods that have high gluten, soy and alcohol content.

Unfortunately, her fans did not take the misleading teaser and anticlimactic revelation so well that they allegedly "had a beef" with it, says Yahoo! Music.

@Mogulsociety tweeted how disappointed he is that he set his alarm as early as 6:55 a.m. just to hear his idol talk about diet, while @theonewithbey noted how the singer seemed to tell everyone that they are fat with her announcement.

But, unfazed by the negative comments about her new found diet, Queen B showed off her sculpted body while sporting a sexy one-piece bathing suit in a recent post on her personal website as proof that her plant-eating endeavour is paying off, reports E! Online.