1. Casual Chic: Pair the grey trousers with a white T-shirt, a black blazer and white sneakers for a casual yet chic look. 2. Weekend Vibes: For a weekend look, wear the grey trousers with a striped T-shirt, a black leather jacket and black boots. 3. Elegant Evening: For a dressier occasion, wear the grey trousers with a black off-the-shoulder top, a black blazer and black high heels. 4. Summery Style: For a summery look, pair the grey trousers with a white tank top, a beige linen blazer and white sandals. 5. Layered Look: For a layered look, wear the grey trousers with a black turtleneck, a grey knit sweater and black boots.