Julia Fox and Law Roach team up for a sustainable fashion competition show

For Julia Fox, life is a catwalk. The looks she puts together — cutting off the belt loops of her jeans or creating a top made from tartan ties sewed together — are almost always guaranteed to turn heads and be photographed.

Alongside Law Roach, Fox is a host and judge of the new E! fashion competition show “OMG Fashun,” premiering Monday. Roach stepped back from styling celebrity clients last year but still works with select people like Zendaya, who is co-hosting Monday’s Met Gala and...