oct. story correct para 18 show person attend concert likely kim yo jong hyonhee shin soyoung kim seoul promotion north korean leader kim jong un 28-year-old sister country top decision-making body sign strengthen position draw important people close center power experts officials say kim yo jong name alternate member politburo within rule workers party korea opaque all-powerful party organ top state affairs decide north official media say sunday make second woman patriarchal north korea join exclusive club kim kyong hui hold powerful roles brother kim jong il rule country since female kim jong un likely see threat challenge leadership say moon hong-sik research fellow institute national security strategy say go blood thick water kim jong un think kim yo jong trust unlike aunt promote politburo 2012 serve three decades party kim yo jong rise power unprecedented pace kim kyong hui see since husband jang song thaek regard no.2 leader pyongyang execute 2013. south korea spy agency believe seclude place near pyongyang undergo treatment unidentified disease accord august brief parliament jang wife relatives fall kim jong un favor kim jong un estrange half-brother kim jong nam kill toxic nerve agent malaysian airport february two women trial murder south korean u.s. officials believe kim jong un regime behind kim jong nam live exile macau criticize family dynastic rule brother issue stand order execution accord south korean lawmakers smartly dress kim yo jong hair usually pull back ponytail mostly see black suit black-heeled shoe make first debut state media december 2011 see stand tearfully next kim jong un funeral father since kim make several appearances brother giggle concert rid white horse smile receive flower behalf state function youth bubbly personality see state media stark contrast usually glum general age party cadres follow kim jong un official duties previously occasionally appear background young heiress move front center media photos recently assist brother numerous high-profile state events massive military parade april mark 105th birth anniversary found father kim il sing see rush behind pillars bring paperwork brother prepare give address month stand alongside unveil ceremony construction project pyongyang march 2016 accompany kim jong un field guidance nuclear scientists claim successful miniaturization nuclear warheads kim yo jong official inclusion 30-strong exclusive club north korea chief policy makers mean role within regime expand cheong seong-chang senior fellow sejong institute south seoul apart age little know kim yo jong february 2011 south korean tv station kbs show woman identify kim yo jong brother kim jong chol enjoy eric clapton concert singapore however reuters review picture show likely different person three reportedly go school switzerland full blood siblings bear kim jong il fourth partner ko yong hui kim jong chol old kim jong il sons involve politics lead quiet life pyongyang play guitar band accord thae yong ho north korea former deputy ambassador london defect south 2014 kim yo jong make vice director workers party propaganda agitation department handle ideological message media arts culture position lead u.s. treasury department blacklist along six north korean officials january severe human right abuse censorship conceal regime inhumane oppressive behavior last year south korea former spy chief say kim yo jong see abuse power punish propaganda department executives minor mistake north korean state media photo january 2015 spot wear ring fourth finger visit child care center south korean intelligence officials say kim might wed schoolmate prestigious kim il sing university confirmation whether indeed marry north korea 's 'princess one secretive state 's top policy makers