Paris Jackson shares rare photo with her brothers Prince and Blanket

Birthdays are all about spending time with your family and friends.

And that's exactly what the Jackson clan did for Blanket Jackson's 18th birthday last week.

Taking to Instagram, Paris Jackson shared a rare photo with both her brothers, wishing her youngest sibling a happy birthday. 

Alongside the picture she wrote: "My little brother is a legal adult today. What the f***.

"I used to change his diapers. This is such a trip ... proud of the handsome, intelligent, insightful, funny, and kind young man he has become.

"He likes privacy so that's all I gotta say. HBD lil bro."

Unlike his older brother and sister, Blanket – whose birth name Prince Michael Jackson II - has rarely been seen in public since his father passed away in 2009.

The teen was given the nickname 'Blanket' by the public after he was held over the edge of a balcony with a blanket over his head by his father when he was just eight-months-old.

The Thriller hitmaker later apologised for the shocking situation saying in a statement: "I offer no excuses for what happened."

"I got caught up in the excitement of the moment. I would never intentionally endanger the lives of my children."

According to reports, Blanket celebrated his big milestone by buying a US$2.6 million house.

The teenager - who turned 18 on February 21 - is said to have snapped up a luxury property in Calabasas, California.

According to Variety, the Mediterranean-style house - which was built in 1990 - has around 6,4000 square feet of living space, six bedrooms, 7.5 bathrooms, a wet bar, a butler's pantry, kitchen, an attached garage and front and back lawns.

There are also three fireplaces throughout the home, including steam showers, soaking tub and a small gym area near to the master bedroom.