Mwanajuma Abdul Juma (born 4th November 1985), Better known by her stage name Queen Darleen, is a Tanzanian bongo flava recording artist, dancer from, and Producer From Tanzania. She is the relative to Diamond Platnumz.

Her music vocation started in 2000. In 2006 she discharged her first melody ‘wajua Nakupenda’ highlighting Alikiba. In 2011 she discharged her next tune ‘Maneno’ including Dully Sykes. Queen Darleen’s other songs include; Wanatetemeka, Kijuso, Touch and Ntakufilisi. Diamond bought her Toyota Tactis on her birthday. She is signed to Diamond’s record label, WCB Wasafi record label.