Amelia Hamlin, 19, puts on a united display with boyfriend Scott Disick, 37

Her mother aired her concerns about their 18-year age gap in a new RHOBH trailer released earlier this week. But Amelia Hamlin, 19, and Scott Disick, 37, put on a united display as they headed out shopping with his daughter Penelope, eight, in Miami on Wednesday. Couple: Amelia Hamlin, 19, and Scott Disick, 37, put on a united display as they headed out shopping with his daughter Penelope, eight, in Miami on Wednesday Amelia teamed her brightly coloured skirt in shearling sandals and a black polo neck crop top which teased a hint of her toned abs. Stepping out: The brunette beauty put on a leggy display in a rainbow coloured miniskirt, while Scott rocked a Lakers basketball purple sweater It comes after Amelia's mother Lisa gave her take on her daughter's relationship with the Keeping Up With The Kardashians star. Rainbow bright: Amelia teamed her brightly coloured skirt in shearling sandals and a black polo neck crop top which teased a hint of her toned abs Adorable: Penelope, meanwhile, looked adorable in a leopard print coat and pink velvet flares as she held onto her dad Scott's hand during the shopping trip Dressing young: Scott, 37, looked like a teenager as he rocked a pair of cargo pants and a tie-dye top for the outing 'He's too damn old.