Red alert for Mariah Carey

Mariah Carey steps out in bold coat as she teases fans with details of new album.

Mariah Carey seen arriving at the Dorchester Hotel at The Dorchester in London, England. (GETTY/GALLO)

Mariah Carey seen arriving at the Dorchester Hotel at The Dorchester in London, England. (GETTY/GALLO)

Mariah Carey seen arriving at the Dorchester Hotel at The Dorchester in London, England. (GETTY/GALLO)

Mariah Carey seen arriving at the Dorchester Hotel at The Dorchester in London, England. (GETTY/GALLO)

Mariah Carey seen arriving at the Dorchester Hotel at The Dorchester in London, England. (GETTY/GALLO)

Mariah Carey seen arriving at the Dorchester Hotel at The Dorchester in London, England. (GETTY/GALLO)

Mariah Carey seen arriving at the Dorchester Hotel at The Dorchester in London, England. (GETTY/GALLO)