I was just getting settled in my seat for the first showing of “Melania” at the Grove cineplex when Melania Trump walked in.

OK, it wasn’t the Melania Trump, as in the first lady. But it was a reasonable facsimile.

The impersonator, followed by a man filming with his phone, strode in like a model, flinging her hair back and smiling as she addressed the six people — many of them critics from various press outlets — in the auditorium who were among the first in Los Angeles to see “Melania,” the controversial documentary that features the first lady as star and producer.

“Hi, everybody. I want to welcome you all to my movie,” the impersonator said in a Slovenian accent. She wore a stylish dark pantsuit and high heels, a frequent motif in the film which chronicles the real Melania Trump in the 20 days leading up to the second presidential inauguration of her husband, Donald Trump.

After a few more words of greeting, the impostor Melania flashed another smile as she exited.

I was stunned and extremely frustrated that I didn’t have time to capture the moment. It’s rare to find yourself in the presence of a first lady —even a fake one.

During the film, my fellow viewers were mostly silent, although there were a few murmurs of laughter as Melania Trump outlined the burdens of coordinating the correct outfit and decor for her re-entry to the White House.

“My creative vision is always clear, and it’s my responsibility to share my ideas with my team so they can bring it to life,” she says at one point.

Later in the film, when Donald Trump was formally introduced at the inauguration as the 47th president, one older woman sitting near the front of the theater applauded. And I could see her smiling as, onscreen, the first couple made their way through the White House following the ceremony.

“Being hand in hand with my husband at this moment is very emotional,” she says. “Nobody has endured what he has over the past few years. People tried to murder him, incarcerate him, slander him. But here he is. I’m so very proud.”

I hoped that Melania would be around in the lobby as we left the theater to ask us how we liked the film. But I was disappointed. Melania had left the building.