Career
De Jager received her training with Rotterdam"s Scapino Ballet, and was then hired by the Dutch National Ballet. TopPop was a very popular music show in which artists mimed their hits in the television studio. If the artists were unavailable, one of the options was to have de Jager and her ballet perform while the hit was played.
Her choreography was later described as somewhat monotonous, characterized mostly by costumes and hairdos freely waving and flopping around.
She founded the Penney de Jager Ballet (later called "Holland Show Ballet", with production assistance from Frank Wentink) and ran a dance school in Utrecht. De Jager had another son, David, who was adopted by a couple from the United States.
Later she followed him there. In the United States she did choreography for television ads and music videos.
Having returned home for a vacation, she was not allowed to reenter the United States and stayed in the Netherlands.
In 2008 she moved to Stichtse Vecht, where she continued teaching dance, now also for senior citizens. De Jager appeared in Playboy magazine in 1985.