The 25-year-old met with fitness and wellness expert David Kirsch -- who works with celeb clients such as Heidi Klum and Anne Hathaway -- at his Madison Square Club in NYC.
"We're shaping and toning your shoulders, getting ready for the wedding dress," Kirsch explains in the video (watch above). "Make sure your abs are tight and you're breathing throughout the exercise."
So what did the Lunenburg, Massachusetts, dental office manager think of Kirsch's four-days-a-week circuit program (which includes five separate toning moves)?
"It went great. David was amazing. He taught me so many things that I can take home," she says. "Everything that he worked out with my arms and my back, those were the most important things I wanted to work on."
For more pre-wedding workout tips -- as well as Kirsch's diet advice -- pick up the new issue of Us Weekly, on stands now!