In dramatic and graphic testimony, Elizabeth Smart took to the stand in Salt Lake City, Utah, on Monday in the federal trial of her accused kidnapper, recounting how Brian David Mitchell allegedly told her: "I was his hostage."

Smart, 23, told the court she was forced to walk five hours in the woods, before meeting Wanda Barzee, who forced her to remove her pajamas and put on a robe, where Mitchell performed a "marriage" ceremony.

Elizabeth Smart Testifies About Kidnapping, Reveals New Details Of Ordeal

"I was crying a lot so I didn't realize what was going on a first," Smart said, insisting she screamed 'No'.

Wearing a red jacket and black and white skirt in court, the blonde woman described how Mitchell allegedly sexually assaulted her -- and we warn -- Smart's recollection is extraordinarily horrific.

The trial of Elizabeth Smart’s kidnapper resumed Monday as she took the stand and described the terror she felt the night of June 5, 2002, when a knife was held at her throat and she was taken from her home

Wearing a red jacket and a black-and-white skirt in court, the 23-year-old -- who flew in from Paris, France for the trial -- described how she was startled. 

Elizabeth Smart Testifies About Kidnapping, Reveals New Details Of Ordeal

“I could feel something cold across my neck,” Elizabeth testified. 

She said a man with a “soft but very serious” voice told her to get out of bed. 

“I thought I was having a nightmare,” she recounted.

Elizabeth Smart’s mom has told a court of her “utter terror” on discovering that her 14-year-old daughter had been snatched from her bedroom while the family was sleeping, RadarOnline.com can reveal.

Lois Smart gave her heart-wrenching testimony during the kidnapping trial of Brian David Mitchell at the 10th U.S. Circuit Court Of Appeals in Salt Lake City, Utah.

It’s alleged that Mitchell broke into Smart’s home on June 5, 2002, and snatched Elizabeth while her sister Mary Katherine pretended to be asleep in the same room.

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Smart was allegedly abducted and kidnapped by Mitchell and Wanda Ileen Barzee before amazingly being reunited with her family nine months later.