Fifteen-year-old Lexi Catlin died after a crash on the A355 in Beaconsfield at about 9.20pm.
She was killed when the motorbike she was a passenger on was involved in a crash with a white Toyota Yaris and a grey Toyota Hilux.
Floral tributes were left at the scene of the crash last weekend with balloons, photos and ornaments also placed at the side of the road.
In a statement, her family said: “It is with a heavy heart that we must report that our beautiful baby girl, Lexi, was tragically taken from us last Friday, aged just 15 years old.
“Lexi was kind, caring, funny and outgoing, whose smile lit up every room.
“She loved being out with her friends, having fun and making the most of every minute of every day.
“Lexi had so, so much to offer this world, with so many dreams and aspirations that we will now never get to see her fulfil.
“Words cannot express how much Lexi was loved and adored by her family, who miss her so much already.
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“We are truly heartbroken, with a massive Lexi-shaped hole in our lives, which will never be the same again.”
They added that tomorrow (March 21) would have been her 16th birthday.
“The family is holding a private event to mark this special occasion.” they wrote.
“We therefore respectfully request privacy for our family and friends at this difficult time.
“Fly high, Lexi Lulu — you’ll be the brightest star in the sky. All our love, always.”