"break the conventions" is a correct and usable phrase in written English.
It means to challenge or go against established norms or traditions. Example: The fashion designer wanted to break the conventions of traditional runway shows by hosting her latest collection in an abandoned warehouse.
Addie and Louis break the conventions of the fictional small town of Holt and spend their nights together.
As untraditional as the affair might seem, the men were actually following a long tradition of Americans coming here to break the conventions of the day, do something illegal, or simply live as they wished.
As they themselves note, fashion photography may be by and large a medium of conformity, but it has always attracted people who want to break the conventions, from Man Ray's surreal concoctions to Guy Bourdin's twisted narratives articulated with pop finesse.
Snapchat is interesting in that they break the conventions of traditional fundraising, one source tells us.
In the small provincial community where they live, neither she nor Huus dares to break the conventions they know, sad as it all may be.
We want to honor beautiful bodies that break the conventions we encounter in magazines, on television, on billboards and just about everywhere else.
The first woman to break the convention and make a mark in Indian journalism was the legendary photojournalist Homai Vyarawalla, who died last year.
The organisation said that such a large importation for personal use might break the Convention on International Trade in Endangered Species of wild flora and fauna (Cites).
That appeared to break the convention, established since the Bank of England was given independence in 1997, that politicians refrain from commenting on the direction of monetary policy.
The government believes the first three motions, including a "fatal" one to be tabled by the Liberal Democrats, would break the convention that peers do not block financial measures.
Benjamin West's The Death of General Wolfe, which depicted the moment of victory in the battle of Quebec 12 years earlier, helped break the convention that soldiers in historical scenes should be shown wearing classical costume.
