JADE Agius and Ashley Semple have a big secret.
On Sunday the Biloela duo will jet off to see British band One Direction perform in Melbourne.
The girls won the prize as part of the TV Week Logie competition.
But, for now, the girls must stay tight-lipped about the details of their once-in-a-lifetime adventure.
"If we tell anyone too many details we forfeit the tickets," Ashley's dad, Guy said.
The 15-year-olds shocked their parents with the win.
"You've got to be supportive when your kids enter competitions but I never thought they would win," Ashley's mum, Mary said.
"(Our friends) are really jealous," Jade said.
The girls made a poster and had to say in 25 words or less why they loved One Direction.
Their entry had a creative edge incorporating the band's song titles in their 25-word declaration.
Going to the concert was a dream for the girls, who will be joined by Ashley's dad and sister.
"When their tickets went on sale we had the computers set up but by the time we got through it was sold out," Ashley said.
The girls will join 90 other winners for the trip.