Donald Trump usually isn’t one to show too much emotion, but the big-wig businessman was clearly moved by Christina Aguilera’s live performance at the Nakheel and Trump Organization party on Saturday night in Los Angeles to celebrate the Trump International Tower in Dubai.

The Donald looked spellbound by the striking songstress, shaking his head in disbelief as she showed off her four-octave range in an emotional rendition of her 2003 hit “Beautiful.” (It was hard to believe that Aguilera had a baby earlier this year judging by her itty-bitty waistline.)

But as much as Trump clearly has a thing for the 27-year-old, she was pretty daunted by him as well.

“On a night like this I definitely get those pre-performance butterflies. I think there’d be something wrong if I didn’t get them just a little bit — it’s Mr. Trump,” she told Pop Tarts with a smile before her showdown. “Tonight’s sort of more [of an] intimate setting, just with a very stripped down band of mine, so it should be fun.”

Aguilera also said the most challenging part of being successful in the entertainment industry is getting rid of the bad apples.

“In this business it gets crazy — the people that you sort of have to weed through with bad intentions or ulterior motives — but you have to trust your instincts,” she said. “In the end, know what you’re in it for and it’s the love of music and the love of what I do, so I just have fun with it and really continue to try and soul search and be myself continuously through and through.”

Christina stayed on at the super-swanky soiree right up until the end, rubbing shoulders with the likes of Ivanka Trump, Lucy Liu, Orlando Bloom, Aaron Eckhart, Hayden Panettiere, Diddy, Ali Larter, DJ Pete Wentz (who refused to discuss wife Ashlee Simpson) as well as Deryck Whibley and wife Avril Lavigne (who was also partying up with her new BFF Ali Sims.)

Hilary Swank was also there, fresh from her flight in from South Africa after wrapping “Amelia Earhart” and sporting a new, very short blond crop.

“I didn’t find cutting my hair that shocking,” Swank said. “I think a lot of people wish that they could cut their hair and had the guts to do it. Everyone says it’s so courageous — I’m like, not really, it’s my job.”

Source: Fox News http://www.foxnews.com/story/0,2933,409767,00.html