'Office dad aesthetic' is a 2024 menswear trend embracing the mildly nerdy, comfortable, slightly dated office uniform of older male office workers — pleated trousers, button-down shirts tucked in, brown loafers, a New Balance trainer or two, perhaps a polo. It is worn ironically and stylishly by Gen Z men. If your teen dresses 'office dad', they are following a fashion trend, not regressing. Harmless and easy to assemble from charity shops.