Millie Bobby Brown has a few tricks up her sleeve!

The 21-year-old actress appeared on the March 11 broadcast of The Tonight Show Starring Jimmy Fallon and opened up about deceiving a nosey photographer before her wedding to Jake Bongiovi.

During the talk show visit, Brown told host Jimmy Fallon, 50, that she ran into a photographer on the way to her final dress fitting for her big day.

“I went into the wedding dress fitting and I put my wedding dress on. There was a big glass window, and I thought that she could see through it,” she said of the photographer. “So I was like, ‘Oh my gosh, she knows what my wedding dress looks like and then Jake’s going to see it.’ I was so terrified.”

Quick on her feet, she decided to try on a dress that was “the complete opposite” from the look she was going for. “I was like, ‘I’m going to walk out and I’m going to start fake crying, pretending that I found the gown.’ She got the whole thing and it sold. She thought she got some quality. Well, let me just tell you right now, it wasn’t. I tricked you.”

Fallon then played a video that Brown captured of the decoy dress. In it, she wears a mermaid-style gown with jeweled detail, along with bedazzled glows. “This is my dress!” she dramatically exclaims as she walks towards a full-length mirror.

People can be heard laughing in the background of the video as the photographer is captured standing across the street with her camera pointed at the glass window.

“It was the best [acting] of my career,” Brown quipped of her performance.

Elsewhere in the episode, Fallon noted that Brown had gotten married since she was last on his show. “Jake Bongiovi, I love him,” the comedian said of her husband. “He’s one of the nicest, coolest dudes ever.”