Miss Universe 2012 National Costume Show: Watch Live Stream Online [VIDEO]

The Miss Universe national costume show starts tonight at 7 p.m. PST.

The preliminary competition was held last night at the Planet Hollywood Resort and Casino in Las Vegas, NV.

The beautiful women around the world were judged in segments that included bathing suits, evening gowns, and an interview.

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Viewers who missed the only preliminary round can watch last night's broadcast on the competition's website.

It was a tough choice for the judges who had to nail down the top beauties for the final competition. The 89 contestants were narrowed down Thursday night to 16 finalists who will compete for the top title, but viewers will have to wait till Dec. 19 to see which beauties will go on to the last round, according to the Las Vegas Sun.

Last night's event gave fans a preview of what is to be expected at this year's main competition, but it's not the only time viewers will get to see the contestants as tonight's costume show is sure to heat things up.

Fans can check out the Miss Universe Youtube channel for behind the scenes looks featuring Miss Universe Philippines 2011 winner Shamcey Supsup.

The pageant also created a Twitter account for fans to have their questions asked during the live broadcast during the Dec. 19 event.

Fans will get the chance to vote for their favorite beauty before the competition by visiting the site here, but voting ends on Dec. 18. To see the full list of the beautiful contestants click here.

The big show will be dual-hosted by Bravo's Andy Cohen and E! News anchor Giuliana Rancic.

Some of the celebrity judges include Cee Lo Green and Olympic gold medalist Kerri Walsh Jennings, according to the Associate Press. The group of ten judges will be led by pageant owner Donald Trump.

The show will also feature a musical performance by Grammy-award winning group Train.

The 2012 Miss Universe Pageant broadcasts live on Dec. 19 at 8 p.m. from Las Vegas where 2011 winner Leila Lopes will crown her successor.

Watch tonight's Miss Universe National Costume Show Here.