Earlier this week we saw a glimpse of Grant Gustin’s costume for ‘The Flash‘ TV series, and now Arrow’s executive producer Andrew Kreisberg tweeted that filming has finally begun: “On your marks… Get set… GO!” along with a photo of the clapboard.

The anticipated ‘Arrow’ spin-off series will begin production on the pilot episode next week. ‘The Flash’ pilot also stars Rick Cosnett as Detective Eddie, Danielle Panabaker as Caitilin Snow, Candice Patton, Tom Cavanagh as Harrison Wells, Jesse L. Martin as Detective West, and Carlos Valdes as Cisco Ramon. John Wesley Shipp who played ‘The Flash’ in the original 90s version, will guest star in the pilot in a mystery role and is intended to be a recurring guest star in the series.

[Via Andrew Kreisberg Twitter]