How tall is Belle Delphine? This image appears in the gallery:Belle Delphine: 14 facts you (probably) didn't know about the online star 3. How tall is Belle Delphine? Belle Delphine is 5ft 6in (168cm) tall. [via Instagram] 15 images See the full gallery: Belle Delphine: 14 facts you (probably) didn't know about the online star