Six years after Michael Jackson's death, his kids Blanket, Paris, and Prince have grown up quite a bit Credit: Mark Davis/Getty Images

Six years ago today, June 25, the world lost an icon -- and Prince, Paris, and Blanket Jackson lost their father, the late King of Pop Michael Jackson. In the time since his shocking death at age 50 in 2009, his three kids have grown up quite a bit.

Prince, for example, is now 18 and a high school graduate. The eldest of the bunch received his diploma from Buckley High School in L.A.'s Sherman Oaks neighborhood on Saturday, May 29, with grandmother Katherine Jackson, sister Paris, and several others there to support him.

"When they announced his name, the whole Jackson family stood up and cheered and whistled," an onlooker previously told Us Weekly. "Prince was ecstatic as he crossed the stage."

His sister Paris has a lot to smile about these days, too. The 17-year-old student is dating 18-year-old Chester Castellaw, a soccer player for the California-based club Real So Cal. The two made their public debut in late May, posing together at the opening night of Deaf West Theatre's production of Spring Awakening.

"The family really likes Chet," a source tells Us of Paris' beau, adding that Paris herself -- who was hospitalized after a suicide attempt in 2013 -- is "doing really well" these days. "She's really into sushi, Starbucks, music, and acting," the insider says.

Indeed, the aspiring star has already lined up her first movie, a starring role in the big-screen adaptation of the book Lundon's Bridge and the Three Keys. She actually landed the gig back in 2011, but according to IMDb, the film isn't due out until 2017.

The youngest of the Jackson kids, Blanket, is now 13. A source tells Us he recently started going by the name Bigi, and is "really quiet."

Elsewhere in the family, the trio's aunt La Toya Jackson paid tribute to her late brother via Twitter on Thursday, sharing an old black-and-white photo of them with her 381,000 followers. "We Love You!" she captioned the pic. "We Will Always Miss You!"

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics, and more delivered straight to your inbox!