□□yon□ t□e□r individual su□cess□□Jessic□ and Krystal have also coll□borated□on v□r□ous projects □oge□her.□F□□m photo□□oo□s an□ □□gazine cov□rs to □eality □V show□ and char□ty events, the sisters have□proven□th□t□t□ey are a fo□ce to be reckoned □ith when they jo□n for□es. Their shared v□si□n a□d mutua□ resp□ct □□r eac□ oth□r□s□ta□ents have o□ly strengthe□ed their□bond□ove□□the y□a□s.