Miss USA -- Vegas Knew She Was A Winner ... Way Before The Rest Of Us

The newly crowned Miss USA, Olivia Jordan, is hot as hell … a not-so-well-hidden secret Vegas discovered when she stripped down to a bikini to win a different title.

Olivia won the Luli Fama Swimwear Model Search at Wynn's Encore Beach Club back in 2014 -- and took home a giant $25k check, and a modeling deal.

Previous winner Nina Agdal was also there ... and posed with Olivia and the runners-up for a smoking hot winners circle shot.

We're guessing they skipped the interview round for the Vegas competition. Hint, hint ... organizers of Miss USA and every other stupid beauty pageant.