This article is part of a series about Mobutu Sese Seko
Mobutism Popular Movement of the Revolution Manifesto of N'sele Early political career Binza group Congo Crisis government dissolution Presidency Zaire Constitution of Zaire Stanleyville mutinies Authenticité Foreign policy Special Presidential Division Civil Guard Shaba I Shaba II Rumble in the Jungle Political exiles 1991 Zaire unrest First Congo War Abacost
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The abacost, a blending of the French "à bas le costume" (lit. 'down with the suit'), was the distinctive clothing for men that was promoted by Mobutu Sese Seko as part of his authenticité programme in Zaire, between 1972 and 1990. Zairians were banned from wearing Western-style suits with shirt and tie to symbolise the break with their colonial past. The abacost was a lightweight suit, worn without a tie, though sometimes with a cravat. It closely resembled a Mao suit. It was seen in long-sleeved and short-sleeved versions.

The abacost was seen as the uniform of Mobutu's supporters, especially those who had benefited from his regime. When Mobutu announced a transition to multiparty democracy in 1990, he said that the Western suit and tie would be allowed, but that he continued to favor the abacost and it would still be considered the national dress. Subsequently, when the transitional government was sworn in, all of the ministers were wearing abacosts.^[1]

Arzoni in Zellik, Belgium produced the world's "chicest" abacosts.^[2] Alfons Mertens, employed by Arzoni, became Mobutu's personal tailor, also making uniforms for him and his entourage.^[2]

The abacost fell out of favour after Mobutu's removal from power.