# Timothée Chalamet's backless Haider Ackermann suit

> Timothée Chalamet wore a backless Haider Ackermann suit at the 79th Venice Film Festival.

- Owner: Timothée Chalamet; Haider Ackermann (designer)
- Kind: Moment
- Sector: Fashion & accessories
- Seed date: 2022-09-02
- Milestone date: Week of Sep 4, 2022
- Date basis: Documented milestone; not a measured attention peak. Dates use the stated precision; chart positions are date anchors.
- Spread Score: 33 (Niche, provisional), v1.2
- Mechanics: Transgression, Controversy, Press loop, Platform jump

## Summary

Timothée Chalamet wore a backless Haider Ackermann halter suit to the Bones and All premiere in Venice on Sept. 2, 2022. Twitter users reacted the same day, Jason Momoa posted it on Instagram, and Euronews, Le Monde and the Guardian said it went viral.

## Timeline

- 2022-09-02 — Timothée Chalamet (Press) — Chalamet wore the backless halter suit; Ackermann later described developing it together without stylists.
- 2022-09-02 — Vogue (Press) — Vogue and We Got This Covered published articles on the look the same day.
- 2022-09-02 — Twitter users (X) — Twitter users posted reactions, one saying he was "giving slutty mr tumnus at venice film festival".

The full timeline, metrics and sources are on the case page, or via the Pro API (https://howitspread.com/developers).

Canonical URL: https://howitspread.com/cases/timothee-chalamet-haider-ackermann-backless-suit

Cite as: How It Spread (2026). “Timothée Chalamet's backless Haider Ackermann suit.” Case HIS-00990. Spread Score v1.2: 33/100. Updated 2026-10-17. https://howitspread.com/id/HIS-00990