Fashion designer Michael Costello has opened up about feeling suicidal after allegedly being bullied by Chrissy Teigen.

The model and television personality returned to social media on Monday night with a lengthy apology for her past cyberbullying, telling her millions of followers: "I was a troll, full stop, and I am so sorry."

The former Lip Sync Battle host made headlines earlier this year after old DMs of her telling then 15-year-old Courtney Stodden to kill themselves emerged.

Teigen apologized, taking a break from social media, before returning last night with a lengthy blog post on Medium in which she said the past few weeks have been "humbling."

"Confronted with some of the things that I said, I cringe to my core," Teigen wrote.

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