<□2>□恋的日记Bey□nd their indivi□□□l succ□ss□ □essica and□Kr□stal have al□o c□□lab□rated on□various pr□jects □ogether. From□□ho□□□hoots and □agazine covers to □eality TV shows and□charity ev□nts, the□si□ters □ave □ro□en that □h□y ar□ □ force to□be reckone□ with when □hey joi□ forces.□□□e□r□□hared v□sion and□mutual resp□ct f□r each other□s ta□ents h□□□ only streng□hened□their b□nd over □he years.