- Alexia Knecht de Massy (2001)
- Vittoria Knecht de Massy (2007)
- Andrea Knecht de Massy (2008)
She is good friends with her elder second cousin once removed (I *think* that's right: Christine's great-grandmother is Princess Alexandra's great aunt, they share the same great-grandparents/great-great grandparents, Prince Pierre and Princess Charlotte), Princess Alexandra of Hanover. The pair can often be seen attending events together, like reading at Princess Alexandra's uncle's wedding (Christine is the redhead in Green), and attending the 2011 Monaco Global Champions Tour. She has also been spotted attending the International Circus Festival of Monte Carlo in recent years (2008 (redhead, center)).
Because her father, she and her sisters *technically* lost their place in succession with the death of Prince Rainier in 2005, she and her family are known to keep out of the main limelight. Other than the occasional all family appearance or out and about with Princess Alexandra, she's kept away from the media's glare.
Prior to the family moving to South Africa sometime in 2012-2013-ish, she attended the private catholic school, L'Institut François d’Assise Nicolas Barré, along with her younger sisters and second cousins once removed Princess Alexandra of Hanover and Camille Gottlieb. Along with Princess Alexandra, she was active in keeping a progressive program to promote maths and science in the school and community. She should presently be a year behind Princess Alexandra in school.
It is presumed that she is named for her paternal grandmother, who died of leukemia before she was born.
Other than her school activities and a few rare occasional appearances alongside Princess Alexandra at events, she is primarily kept from the limelight other than a few major family events. Having lived in a francophone country, I imagine she speaks French, having an American grandfather, I imagine she speaks English, having an Italian mother, I imagine she speaks at least some Italian.