Paris Jackson enjoys romantic date night with boyfriend Chester Castellaw as they dine out on sushi

Paris Jackson and new boyfriend Chester Castellaw look to be going from strength to strength.

The happy couple were spotted out in Woodland Hills, California, over the weekend for an early-evening date.

The 17-year-old daughter of the late Michael Jackson looked happy and healthy, stepping out in a black dress teamed with Dr Marten boots. 

Paris and Chester, who she started dating earlier this year, dined out together at Sushi Planet before heading into a nearby shop afterwards.

Last month Paris attended 18-year-old Chester's high school graduation, alongside his parents and older siblings at the Greek Theater in Los Angeles.

'There were some toasts of champagne among parents but Paris wasn’t interested and was happy enough with bottled water,' an onlooker revealed at the time.

'Chester has a healthy lifestyle and loves working out but his real passion is for sciences - he’s a very smart kid.'

Another source said: 'The whole Castellaw family were glad to share the moment with Paris.'

It’s another big step in their relationship as it emerged Chester's parents, Nancy and Gerald, have welcomed his sweetheart into their Hidden Hills mansion with open arms, first revealed by Women’s Day.

'She's incredibly grown-up for someone her age,' the source said. 'People forget how much she's been through in her life.'

The relationship has done wonders for Paris, with the source adding: 'It’s the happiest she's been in a long time.' 

An onlooker at the prestigious Berkeley School ceremony said: 'Paris smiled for the entire day. She ran straight over to Chester and hugged him when he picked up his diploma.'

Paris looked neat and pretty while dressed in a black patterned top, her dark fuchsia-streaked hair shining in the afternoon sun.

Her wrists were adorned with a cluster of amulet bracelets as she wrapped her arms around Chester's neck - he, of course, wore the robe and cap of a graduate.

For Paris, this stability and comfort of her new life is a much-needed distraction.

In 2013, Paris' grief over losing her father took its toll and resulted in a stint at UCLA Medical Center where she was treated for depression. 

Her tragic father’s circus-like home Neverland was put on the market with a $100 million asking price, causing tension among the disjointed Jackson clan over how the financial proceeds will be split.

Paris, along with her brothers Prince, 18, and Blanket, 13, lives with her grandparents Katherine and Joe Jackson at the family's compound in Calabasas, California.