\"I had my team hit [up] a lot of designers,\" she continues. \"And a lot of them do not want to dress me because I'm too big. Literally, like, I'm too big.\"

The furious singer continues, \"If a size 6/8 is too big then... I dunno what to tell you. Then I don't wanna wear your f---ing dresses! 'Cause that's crazy! 'Cause you're saying that all the women in the world that are a size eight and up are not beautiful, and they cannot wear your dresses!\"

(MORE: Alicia Keys shares sons’ hilarious reactions to her Grammy hosting announcement)

\"So all the people that said I'm thick and I can't wear dresses? F--- you!\" she says pointedly. \"I don't wanna wear your f---in' dresses.\"

\"PHOTO:
John Parra/Getty Images, FILE
PHOTO: Bebe Rexha performs on stage during 93.3 FLZ's Tampa Jingle Ball, Dec. 15, 2018 in Tampa, Fla.
>

In the caption, Rexha writes, \"I'm sorry, I had to get this off my chest. If you don’t like my fashion style or my music that’s one thing. But don’t say you can’t dress someone that isn’t a runway size.\"

\"We are beautiful any size! Small or large! Anddddd My size 8 a-- is still going to the Grammys,\" she adds, with the hashtag #LOVEYOURBODY.

Rexha received support on social media, including from fellow celebrities like Adam Lambert, Mayim Bialik and Tyra Banks, who called Rexha \"pure genius.\"

Christian Siriano -- who is known for reaching to stars like Megan Mullally and Leslie Jones when they said they were shut out by fashion houses -- offered to dress Rexha for the Grammys.

Thanks everyone for the love! We have dressed @BebeRexha a few times and would love to do it again!

— Christian Siriano (@CSiriano) January 22, 2019

The day I met You n Toronto, I knew U were xtra special. R impromptu posing lesson backstage was MAJOR. You stuck that leg & hip out & Tooched & Smized at the same time. Those designers that don’t wanna dress U are DUMB. U my dear @BebeRexha are pure genius...H2T - head to toe!?? https://t.co/UwCGyIJTcB

— Tyra Banks (@tyrabanks) January 22, 2019

????

— ADAM LAMBERT (@adamlambert) January 21, 2019

All women, and people, of any size are real life!

— Mayim Bialik (@missmayim) January 22, 2019

Rexha said she still plans to attend the Grammys, which air Feb. 10 on CBS.

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