Swedish lawmaker Abir Al-Sahlani cut her hair in the European Parliament in Strasbourg on Wednesdsay, in solidarity with protesters in Iran.
Al-Sahlani demanded the "unconditional and immediate stop of all the violence against the women and men of Iran", before cutting off her hair while standing at the lectern.
The gestures of defiance come as Iran is engulfed by anti-government protests.
They were sparked by the death of 22-year-old Mahsa Amini after her arrest for allegedly violating the Islamic Republic’s strict dress code.
Some of the Iranian demonstrators have publicly hacked off locks of hair at the protests, and the gesture has spread.
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Images of women elsewhere cutting their hair to show solidarity with Iranian women have gone viral - from Turkish singer Melek Mosso on stage last week, Oscar-winning actors Marion Cotillard and Juliette Binoche, to women in Lebanon and Syria.