Hundreds line up outside Georgetown Cupcake on M Street NW. (MARVIN JOSEPH/WASHINGTON POST)

Now, the lines outside the cupcakery’s Bethesda Row location are developing an equally infamous reputation.

The Georgetown Dish reports that a food fight has broken out between Georgetown Cupcake, which opened on Bethesda Avenue in November 2009, and nearby businesses, including Assaggi Mozzarella Bar and Daddy & Son Camiceria Italiana, a men’s clothing store.

The merchants say the cupcake lines block entrances and outdoor patios, encroach on customers eating and shopping there, and threaten personal security along the already narrow and crowded sidewalk.

“It’s a circus,” said Golnaz Feiz, Assaggi’s general manager.

Visit the Georgetown Dish for the full report.

More Georgetown Cupcake coverage:

Story: Swooning for the sugar

Photos: Georgetown Cupcake grows in popularity as tourist destination

Video: Neighbors frosted over cupcakery’s popularity

Going Out Guide: Georgetown Cupcake