Enjoy “Red, White & Royal Blue”-themed cake at a special pop-up throughout West Hollywood on Aug. 13. (photo courtesy of Prime Video)

To promote the highly anticipated Prime Video film, “Red, White & Royal Blue,” a show stopping, film-themed, double decker karaoke bus will take to the streets of Los Angeles on Sunday, Aug. 13.

Angelenos can hop on and unleash their inner rock star. Just as Prince Henry (Nicholas Galitzine) captured the heart of Alex Clairemont-Diaz (Taylor Zakhar Perez) with an impromptu karaoke number, fans can take their own chance at finding love and serenade strangers to a curated enemies-to-lovers themed setlist perfectly tied to the film.

The bus tour will kick off at Milk Bar, located at 7150 Melrose Ave., from 10:30 a.m.-12:30 p.m., where the iconic bakery will be handing out their delicious slices of “Birthday Cake” with a Red, White & Royal Blue makeover (while supplies last). The bus will then make its way over to Rocco’s, located at 8900 Santa Monica Blvd., from 1-3 p.m. and Hamburger Mary’s, located at 8288 Santa Monica Blvd., from 3:30-5:30 p.m. for additional stops of karaoke and giveaways.