Bikini Burger, a no-frills burger joint from local caterer Mia Robertson, has quietly taken over a Rittenhouse Place storefront in downtown Ardmore. The tight, counter-style space is all about straightforward, made-to-order cheeseburgers, old-school milkshakes and crinkle-cut fries, skipping smashburger hype and fussy sauces in favor of speed and familiarity. Early visitors say it is clearly set up for quick takeout and steady neighborhood traffic rather than attention-grabbing gimmicks.
The shop, at 44 Rittenhouse Place, held a ribbon-cutting with the Ardmore Business Association and is currently open daily from 11 a.m. to 11 p.m., according to Patch. Patch also notes that Bikini Burger is Black- and woman-owned and that it eased into the neighborhood with a soft opening earlier in the season.
What to expect
Owner Mia Robertson told The Philadelphia Inquirer she set out to keep things simple, using a never-frozen, double-ground 80/20 blend from a Lancaster County butcher and serving the burgers on Martin’s potato rolls. "I just wanted to bring a really good burger," Robertson said, adding that smashburgers are off the table for this menu. Diners can pick a standard 3½-ounce patty or a heftier 5-ounce "Fat Daddy," along with turkey and black-bean options and a surf-and-turf burger topped with shrimp.
Where it fits in Ardmore
Recent local coverage has cast Ardmore as a full-on burger town, with roughly 16 local burger spots fueling a mini boom tied to the walkable downtown and Regional Rail access, per MONTCO Today. Bikini Burger is part of that latest wave, and community reporting notes its straightforward menu starts around $10, helping the shop gain traction following a late-2025 debut. Savvy Main Line describes the concept as a "taste of summer" tied to Robertson’s beach roots.
FOX29 stopped by on March 30 for a quick segment with reporter Jenn Frederick that shows off the counter-service setup and the classic shakes. The station highlights how the compact menu and quick turnaround times are geared to serve both Ardmore’s daytime crowd and its dinner rush.
Customers have been sharing first-bite reactions on Bikini Burger’s Instagram, and Patch reports that locals have been calling the burgers "head nodders," a compact review that suggests the back-to-basics approach is landing well. Early feedback from reviews and social posts points to steady, positive response during lunch and dinner peaks, according to Patch.
With a compact menu, long hours and a Main Line crowd that clearly appreciates a straight-up burger, Bikini Burger is betting that consistency will win out over theatrics. For now, Robertson’s game plan is to keep things small, focused and familiar, and Ardmore appears more than willing to keep coming back for another round.
