If you missed the last flash mob we tipped you off about, here's your chance to catch another.

Dancers from PopStar Booty Camp will be showing off their routines for Beyonce's "Formation" and Justin Bieber's "Sorry" at two flash mob performances on Sunday, April 17th. The first will be at 2:45pm at the Cupid’s Span in Rincon Park, on the Embarcadero between Howard and Folsom streets. The second, at 3:45pm, will be down the street at Harry Bridges Plaza, the median on the Embarcadero at the foot of Market Street, across from the Ferry Building clock tower.