Chrissy Teigen -- Sports Illustrated Model Gets Death Threats from Chris Brown Fans

Victoria's Secret and S.I. swimsuit model Chrissy Teigen has been bombarded with violent, twisted threats from multiple Chris Brown fans ... after Teigen criticized his performance at the Billboard Music Awards ... TMZ has learned.

Teigen has been under fire ever since she tweeted about Brown's performance Sunday night ... "Why sing when you can dance?"

Team Breezy went insane ... hammering Chrissy with horrible messages that read:

-- "all you do is talk s**t, you need to be raped and murdered."
-- "killyoself bitch ur nothing but tall thatswhy you model. your nothing."
-- "ditzy dumb ass tramp your mother should've aborted you."
-- "i hope you are the next 'celebrity' to die"
-- "you have the brain capacity of a turtle, just die."

Chrissy posted a statement about the situation ... saying, "Reallllly makes me sad that 99% of the most disturbing comments come from young girls. I'll end it there but it make me sad."

She added, "I have some screen caps. And I will do everything I can to make sure people know, internet or not, you CAN'T say this s**t."

The Twitter handles responsible for most of the threats have been deleted.

1:00 PM PT -- Chris Brown just responded to the firestorm on Twitter, urging his fans to stop their onslaught, writing, "Team Breezy! Lets stop sending death threats! I know y'all bout that life but it's the wrong message! Ur turning haters into victims!"