Celine is looking gaunt, but i don't think it's anorexia. For either of them. They've both been thin their entire lives. If they suffered from anorexia that many years they'd both be dead by now.

Have you ever seen Celine perform live? She GIVES. She dances, she runs to change costume, she works every pose, she sings live. She sweats. She doesn’t phone it in. Run around for three hours and work it every night. You’ll lose weight; she works it.

I think it is also their make-up. The darkness around both their eyes makes their eyes look sunken, like dead eyes in an old skull.