Credit: Photo by Tasos Katopodis/Getty Images Photo: Prince Michael, Paris, and Prince Jackson Wear Indie Baseball Jerseys, August 30, 2012

There were many unforgettable moments and special guests at the June 17 premiere party for True Blood’s seventh and final season held at the Hollywood Roosevelt Hotel in Los Angeles, but one such guest really seemed to come out of left field.

E! News has photos of the late Michael Jackson’s eldest son, Prince Michael Jackson, inside the premiere party, but the 17-year-old was hardly using the soiree as an excuse for a night out. Instead, 17-year-old Prince Michael sported a goatee and looked incredibly mature in a black suit with a trendy graphic t-shirt underneath.

And although we’d imagine most teenagers would be intimidated to walk into a room filled with celebs, Prince Michael seemingly fit right in (he is the King of Pop’s kid, after all!) and even posed for photos with True Blood stars Anna Paquin (Sookie Stackhouse) and Joe Manganiello (Alcide Herveaux). In the photo with Anna the 31-year-old actress has her arm around Prince, and in the snap with Joe Prince and the actor are throwing up hand gestures at one another.

The teen, who made his acting debut in an episode of 90210 last year, had a good time at the party. “@TrueBloodHBO #TrueToTheEnd last nights premiere party was great,” he tweeted on June 18.

Are you surprised that Prince Michael was hanging out with the True Blood cast? Tell us your thoughts below!

True Blood Season 7 premieres June 22 on HBO at 9 p.m. ET.

Source: E! News