Wherever she goes, the 45-year-old former model makes an extraordinary presence on the campaign trail.
Trump said of his wife: "She'll make a very beautiful first lady, I can tell you. And a great first lady. She's got a great heart.”
Melania has certainly come a long way from her upbringing in Slovenia.
Photographer Paolo Zambolli, who discovered Melania when she was modeling in Milan and brought her to New York, told INSIDE EDITION: “She'd be a great first lady. She would do the job very well.”
He added: “She was staying lots of times at home, working out a lot, really dedicated to her job. That's what brought her success.”
Donald met Melania at a Fashion Week party in 1998.
“He requested the phone number, and she said, 'No way, give me yours,'" Gwenda Blair, the author of Donald Trump: Master Apprentice, told INSIDE EDITION. "She took her time getting back to him."
She said she believes Melania has what it takes to be first lady.
"One of the qualifications, you might say, for being first lady is getting attention, but being able to stay in the background. She seems to do very well with that," she said.
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They married in 2005. It was a fairy-tale wedding, attracting plenty of celebrities – including Bill and Hillary Clinton, as Donald memorably recalled at the Republican debate earlier this month.
The Trumps have one child together, nine-year-old Barron.
Melania is an entrepreneur in her own right, selling a jewelry line on the QVC network.
If Donald wins the presidency, Melania will join a legendary line of other chic first ladies, such as Jackie Kennedy and Michelle Obama.
Photographer Jill Wachter, who snapped Melania for Jet Set magazine, told INSIDE EDITION: “She could be like the Jackie O of the 21st century, with her style and grace. We could really have a creative, beautiful, special first lady."
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