Didot with Proxima Nova in action on julienrenau.com

Under the hood

.header-1 { font-family: Didot-Italic; font-size: 22px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-transform: none; color: #6C6C6C; }
.header-2 { font-family: 'Proxima N W15 Light'; font-size: 45px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-transform: none; color: #E3E3E3; }

Didot is available from Fonts.com.