Try This On for Size is the debut studio album by American hardcore punk band Spark Is a Diamond, released on May 6, 2008, through Pluto Records.

On September 18, 2009, lead vocalist Alison Bellavance announced on a MySpace blog that the band was disbanding due to "personal issues.

Ryan Cooper from About.com said that the album have "an amalgam that is aggressive and fun, making a sound perfect for fans both on the dance floor in back or the pit down in front."

Eduardo Rivadavia from All Music was more critical of the album, stating "Try This on for Size's prevailing electronic beats are bound to shoo away most metal and hardcore purists on principle alone, while the tuneless screeching that must be endured throughout will clear the average dancefloor faster than a three alarm fire."

On January 5, 2009, Try This On For Size was named “Best Punk Album of 2008” by About.com, defeating established acts such as The Briggs, Bob Mould, Rise Against, Street Dogs and more.