Mariah Carey travelled by boat down the River Thames to her gig at London's O2 Arena on Wednesday night. The We Belong Together hitmaker was certainly keen to make a grand entrance when she arrived for her last Sweet Sweet Fantasy show in the capital on Wednesday by ditching her private car in favor of a brisk water ride onboard a yacht. Despite the chilly temperature, the 45-year-old singer didn't let her ensemble suffer as she waltz out of the Corinthia Hotel, where she is currently staying, in a white full-length fur coat and a slinky sheer thigh-high split frock underneath. Her choice of travel was to avoid traffic, but the singer still arrived at the Greenwich-based venue 30 minutes later than planned.