IN the end, it was a bra that put the winner of the New York Post Victoria’s Secret contest over the top.

“As an avid Post reader, I’m the ideal recipient for this prize,” Robin Singer wrote on her entry ballot. “I know every Victoria Secret’s lingerie line by heart because I wouldn’t shop anywhere else . . . plus I know what a balconet bra is.” (In case you didn’t, it’s a padded push-up bra.)

That knowledge won the 22-year-old bartender $1,000 worth of clothes, more than $300 in makeup and perfume – and a front-row seat Thursday at the Victoria’s Secret fashion show, alongside Ivana Trump, P. Diddy and Tommy Lee.

But that was nothing compared with meeting the models backstage.

Singer had her hair curled in the same chair Heidi Klum did and chatted with Brazilian bombshell Giselle Bundchen, who happily posed for pictures.

“I am so jealous,” Singer sighed, as the Bundchen admired her perfect face in a mirror. “She is the reason people get plastic surgery. My friends are not going to believe this!”

Part of her prize was a session with makeup artist Justin Lawrence, who made Singer look like the rock star she aspires to be.

“Now I can throw out all my Wet & Wild junk,” she joked.

After going home and changing into her new clothes, Singer returned to walk down the red carpet with the other VIP’s. Photographers screamed. Reporters whispered: “Who is that girl?”

“The show was amazing,” Singer said. “I want everything on that runway!”

The Victoria’s Secret fashion show airs Wednesday at 10 p.m. on CBS.