By Emma Wilson Rihanna looked stunning in a statement red dress just days after her mysterious absence from the Met Gala. The singer, 36, was spotted on a sweet date night with partner A$AP Rocky in New York City on Sunday, and she made sure she was the centre of attention as she rocked a jaw-dropping ensemble. Rihanna opted for a red Comme des Garçons t-shirt, that was emblazoned with the name of the fashion house in white letters, and also showed off her killer pins as she layered the top over a red dress with a thigh high split. The Umbrella hitmaker accessorised her eye-catching outfit wit…