Alicia Silverstone looks sensational in sheer Christian Siriano gown, strikes best fashion poses

Alicia Silverstone gets stuck in doorway during photoshoot decked out in Christian Siriano gown

Alicia Silverstone cuts a casual figure in hoodie and leggings while enjoying a hike

‘Project Runway All-Stars’: Bravo Drops Trailer & Premiere Date For Season 20; Alicia Silverstone & Billy Porter Among Guest Judges