Canadian-born pop star Justin Bieber organized a birthday bash in Stratford over the weekend for his younger sister and three Burlington princesses were brought in as part of the entertainment.

One of Bieber’s agents called Burlington-based Fantasy Fables late Friday saying the 21-year-old was throwing a huge Frozen-themed party the next day for his younger sister Jazmyn’s 7th birthday.

The late notice was to keep the paparazzi from camping outside the property.

“It was really exciting,” said Stefanie Bittcher, an assistant director at Fantasy Fables who also travelled along to help the princesses.

“We worked so hard just to finalize everything because 24 hours is kind of tricky to get everything together but we did do it.”

Princess’ Elsa and Anna from the movie Disney’s Frozen, and Ariel from the The Little Mermaid, arrived around noon Saturday at dad Jeremy Bieber’s ranch near Stratford.

Tents, carnival rides, and a rock wall were set up across the property. There were also magicians and clowns to keep the kids entertained.

“It looked like a little fair,” said Bittcher. “He (Justin) definitely went out of his way to make his sister feel special.”

Bittcher said almost all of Stratford was invited and Bieber flew in on his private jet from Los Angeles especially for the affair.

“As soon as I drove up he was there playing with the kids,” she said. “He was helping them climb up the rock wall; it was very sweet.”