"What do U get when U mix Empire with Kingdom Come?"

That's the riddle being posed by Prince's sister, Tyka Nelson, who has been using her Instagram, Twitter and Facebook accounts to tease a "big surprise" that will be revealed on Wednesday, June 7. Prince was born on that date 59 years ago, and many of Tyka's photos offer an unprecedented glimpse into his childhood and their life as a family.

In one photo, Prince can be seen wearing a purple jacket and ruffled blouse from the 1999 and Purple Rain era, planting a kiss on his mother Mattie Baker's cheek. In another, Prince and Tyka's father, the musician John Nelson, leans against a grand piano next to a framed photo of Prince in high school.

And in perhaps the earliest photo ever shared publicly of Prince, a two-year-old baby Nelson stands in front of his childhood home at 915 Logan Ave. N. in North Minneapolis (a house that's since been torn down and replaced) as his pregnant mother stands in the foreground. The photograph is dated May 1960, the month Tyka was born.

So what do these hints have to do with Empire (not to mention Kingdom Come)? It would appear that the former plays into the surprise quite significantly, as additional photos show Tyka Nelson and her husband, Maurice Phillips, are shown posing with various cast members from Empire at a rooftop party. Season three of the show just wrapped up on May 24, and the show has been teasing previews of the fourth season, which returns to FOX this fall.

See more of Tyka's teasers below: