It was a family affair for the past pupils of Holy Child, Killiney, who arrived at their debutante ball with their parents in tow.
"Lots of us had met up at a friend's house and then got a lift with our mums and dads to the debs," former student Sarah O'Sullivan said. No stretch hummers or limos here!
The glitzy shindig, organised by Plan My Debs, took place at the Leopardstown Pavilion and guests were treated to a champagne reception on arrival.
Ladies opted for sweeping gowns in creams and baby pinks while gents went for classic tuxes.
"We had a Facebook group about the dresses to make sure no one arrived in the same outfit," Sarah O'Sullivan said.
A slideshow of embarrassing baby pictures was projected on to one of the walls and generated much conversation.
"It was a bit like a before-and-after show," Lydia Wafer said.
"A picture of each student in sixth year was beside a picture of them as a baby.
"It was a great conversation starter."
With hundreds of photos taken, the parents were dispatched and the debutantes took a seat for dinner.
Former class-mates caught and discussed college courses while tucking into chicken supreme and rich chocolate fondant desert.
Then the band took to the stage and everyone jumped to their feet.
"Everyone was up dancing all night," Lydia said. "It was so much fun and great atmosphere."
The band played a collection of classic songs including Valerie by The Zutons and Shut Up and Dance by Walk The Moon.
Most ladies ditched their heels halfway through the night. "It made dancing easier," Sarah O'Sullivan said.
Things started to wind down around 4am when guests were handed much-needed - and well-deserved - breakfast rolls.
Then the tired debutantes made their way home.