Stockholm - Sweden's Prince Carl Philip has broken up with his long-term girlfriend, reports said Wednesday, a week after his sister, Crown Princess Victoria, announced her engagement.

"We have decided to take a break. It is a joint decision," Philip's girlfriend Emma Pernald was quoted as saying in Stockholm tabloid Expressen.

The 29-year-old prince, has been dating Pernald since 1999. They met through mutual acquaintances, and still have deep affection for each other, according to sources cited by the newspaper.

The prince, known for his interest in design, photography and motor sports, is studying forestry and agriculture at the University of Agricultural Sciences in Alnarp, southern Sweden.