Beyonce teased her loyal fans (also known as the Beyhive) in a video clip on Sunday that she was going to make a “big” announcement on Monday’s Good Morning America.

"Beyoncé has something amazing that she wants you to know. So what is it?" a teaser clip promised.

Most of her fans were expecting the “big” news to either be a new album or a new baby announcement. They instantly went into a frenzy on Twitter, trying to guess what the 33-year-old diva wanted to tell them.

However, the heavily-promoted big reveal on GMA was that she follows a special vegan diet. It is the same diet Bey has been promoting since February when she announced her partnership with nutritionist and exercise physiologist Marco Borges.

Beyonce’s announcement was to promote her 22-Day vegan diet regime, and a vegan food delivery service.

"I am not naturally the thinnest. I have curves. I'm proud of my curves and I have struggled since a young age with diets and finding something that actually works, actually keeps the weight off, has been difficult for me," Queen Bey said in a clip that aired on GMA, which was advertised as the 'first time' she's spoken out on camera about the diet.

Fans also felt that Beyonce used the revelation as an excuse to show off her new incredibly fit physique while plugging the vegan diet.

She shared a collection of photos on the "My Life" album on her Tumblr page Monday. One showed her wearing a pair of tiny denim shorts and a leather jacket. Two others showed her in the same outfit, lounging on some velvet furniture.

This prompted angry and disappointed fans to hit back on Twitter.

Many complained about how "petty" she was to make such an announcement, and "Beyonce petty," even became a trending topic on the social media site.

While others started a new hashtag #ReplaceBeyoncéLyricsWithVegan.

Beyonce's Diet Secrets Revealed - GMA Feature