The designer, who was forced to apologise to Adele after his offending comments, was talking about the style of Pippa, the younger sister of the Duchess of Cambridge, the Sun reported.
Lagerfeld feels that Pippa's derriere shot at her sister's wedding last April makes for a better view than her face.
"Kate Middleton has a nice silhouette and she is the right girl for that boy. I like that kind of woman, I like romantic beauties. I don't like the sister's face. She should only show her back," the designer said.
The 78-year-old, however, is a fan of Victoria Beckham.
"That body, after four children. There are not so many who have a body like that. She is very disciplined."