It wasn't hard to spot Elvis Presley's old co-star on the Oscars red carpet. She was the one wearing the nun's habit.

Mother Dolores Hart, who left Hollywood 49 years ago to pursue a religious life, made a dramatic return Sunday to take part in the 84th annual Academy Awards ceremony.

The Oscar-nominated documentary short film "God Is the Bigger Elvis," tells the 73-year-old nun's story.

"It's absolutely an extraordinary event," said Mother Dolores, her voice barely audible above the red carpet's screaming bleacher fans. "Believe me, this is very different than being in the monastery."

Hart left Hollywood in 1963 after starring in films with Presley, George Hamilton and others.

But even before her departure, she revealed Sunday, she was being drawn to her future calling.

"One of the things that Elvis and I did when we made `King Creole' was we opened the Bible every afternoon before we went on set and we listened to the words of the Lord," she recalled.

Asked what Presley would think of her nomination, she replied, "I think he would be very happy."

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Documentary filmmaker TJ Martin contributed one of those unintentional Oscar night moments when he dropped the F-word while accepting his award.

Martin and his two co-winners were racing to beat the 45-second limit on acceptance speeches when he inadvertently let the word slip. He said it would be " ... awesome" if all of the other nominees in the category could also come on stage.

ABC caught it and muted the broadcast before it got on TV.

Martin apologized immediately.

"It was out of spontaneity. It was completely accidental," he said backstage.

He can take some solace in the fact he wasn't the first to do it.

Last year Melissa Leo let the same word slip after winning the supporting actress Oscar for "The Fighter."

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Melissa McCarthy turned her first visit to the Academy Awards into a family affair.

She was surrounded by her husband, parents and sister as she got ready for the big evening.

"My dad got choked up, then I got choked up, then my mom went, then my sister went," she said. "My husband was like, `Separate!' Because we all cried."

During awards season McCarthy, nominated for supporting actress for "Bridesmaids," has given frequent shoutouts to her hometown, the Chicago suburb of Plainfield, Ill.

"We cleaned the whole town out," she said of taking her big family to Hollywood. "There's nobody left tonight."

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It was also a family affair for Brad Pitt and Angelina Jolie on the Oscar red carpet.

Hollywood's supercouple were headed into the theater when Jolie abruptly stopped and walked back toward the red carpet. There, she took Pitt's parents by the hands and led them to a group of reporters for interviews.

As Pitt rejoined her, the crowd chanted, "Brad and Angie."

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He was in line for a possible Academy Award but Nick Nolte was just as concerned about something he might be losing.

"I'm worried about my teeth falling out," Nolte, nominated for supporting actor for "Warrior" said on the Oscar red carpet.

"See, this one wobbles. It's barely hanging in there," he said, pushing on his left front tooth.

The 70-year-old actor, who polished off a can of Red Bull energy drink before stopping to talk, said he's been too busy working on the HBO series "Luck" to visit a dentist.

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Only 14 months old, Sir Elton John's son, Zachary, was more than ready for his close-up during the 20th annual Elton John AIDS Foundation Academy Awards viewing party.

Blonde-haired Zachary, wearing a black jacket with his name stitched on it that was similar to one John himself had on, chewed on a cloth napkin and twisted and turned as he and John's husband, David Furnish, introduced him to people.

Then, when the photographers arrived at the party in West Hollywood, he opened his eyes wide.

Among those he upstaged were director John Waters, actor Neil Patrick Harris, a blue-bobbed Katy Perry and a pregnant Kourtney Karsdashian.

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Associated Press Writers Cristina Silva, Solvej Schou and Ryan Nakashima contributed to this report