Lily Allen Paints Body Green for UNICEF's Halloween Ball 2013: Photo 2983619, 2013 Halloween, Gemma Arterton, Lily Allen, Robbie Williams, Steve Coogan Photos

Lily Allen Paints Body Green for UNICEF

Lily Allen Paints Body Green for UNICEF's Halloween Ball 2013: Photo 2983624, 2013 Halloween, Gemma Arterton, Lily Allen, Robbie Williams, Steve Coogan Photos

Lily Allen transforms into alien for charity

Lily Allen Paints Body Green for UNICEF's Halloween Ball 2013: Photo 2983626, 2013 Halloween, Gemma Arterton, Lily Allen, Robbie Williams, Steve Coogan Photos

Lily Allen Paints Body Green for UNICEF's Halloween Ball 2013, 2013 Halloween, Gemma Arterton, Lily Allen, Robbie Williams, Steve Coogan

Lily Allen Paints Body Green for UNICEF's Halloween Ball 2013: Photo 2983625, 2013 Halloween, Gemma Arterton, Lily Allen, Robbie Williams, Steve Coogan Photos

Lily Allen Paints Body Green for UNICEF's Halloween Ball 2013: Photo 2983620, 2013 Halloween, Gemma Arterton, Lily Allen, Robbie Williams, Steve Coogan Photos

Lily Allen Paints Body Green for UNICEF's Halloween Ball 2013: Photo 2983626, 2013 Halloween, Gemma Arterton, Lily Allen, Robbie Williams, Steve Coogan Photos

Lily Allen Paints Body Green for UNICEF's Halloween Ball 2013: Photo 2983619, 2013 Halloween, Gemma Arterton, Lily Allen, Robbie Williams, Steve Coogan Photos

Lily Allen Paints Body Green for UNICEF's Halloween Ball 2013: Photo 2983628, 2013 Halloween, Gemma Arterton, Lily Allen, Robbie Williams, Steve Coogan Photos

Lily Allen Paints Body Green for UNICEF's Halloween Ball 2013: Photo 2983628, 2013 Halloween, Gemma Arterton, Lily Allen, Robbie Williams, Steve Coogan Photos