Wiz Khalifa could not stop smiling as he cuddled up with his son, Sebastian, in Los Angeles, California, on Sunday

Wiz Khalifa may be a tattooed covered rapper with a penchant for smoking marijuana, but under his tough exterior he is just one big softy.

The 27-year-old musician could not stop smiling as he cuddled up with his son in Los Angeles, California, on Sunday.

Arriving home, the We Dem Boyz rapper scooped little Sebastian - whom he shares with separated wife Amber Rose - up out of his car seat and gave him a big hug.

Father son day: Wiz Khalifa could not stop smiling as he cuddled up with his son, Sebastian, in Los Angeles, California, on Sunday

Dedicating all his attention to the 20-month-old, Wiz left his assistants grab all their gear out of the back of the car and headed towards their home.

Excited to be in his father's company, the little boy pointed out different things in the garden he wanted his dad to see.

Sucking on a pacifier, the toddler was dressed in a cute ensemble for his father son Sunday Funday, wearing a blue and white stripped polo, grey jeans and little blue converse high tops.

Daddy's boy: Excited to be in his father's company, the 20-month-old pointed out different things in the garden he wanted his dad to see

Wiz meanwhile wore a vintage Chicago Bulls T-shirt with ripped faded jeans and sneakers.

The pair got to spend some quality time together as Sebastian's mother had a party to attend.

Later on Sunday evening, Amber was seen heading to Christina Milian's birthday party at a Hollywood nightclub.

The 30-year-old model looked like she was taking her impending divorce in her stride posing and smiling for pictures outside the Supperclub.

Snappy dresser: Sucking on a pacifier, the toddler was dressed in a cute ensemble for his father son Sunday Funday, wearing a blue and white stripped polo, grey jeans and little blue converse high tops

Her Sunday night out caused far less of a stir than her trip to another club on Thursday.

That night Amber partied it up at manager Nick Cannon's birthday party.

It had been previously suggested that Amber and the actor - whom recently split from wife Mariah Carey - had been romantically involved before the model and Wiz split.

However, it was the 30-year-old's behaviour with another Nick at the Thursday party that sent tongues wagging. 

Party girl: Later on Sunday evening, Amber Rose was seen heading to Christina Milian's birthday party at a Hollywood nightclub

The former girlfriend of Kanye West was seen dirty dancing inside Playhouse with KISS rock Gene Simmons' son Nick.

Nick was also on hand to escort Amber out of the venue and the pair looked very close.

However, the 25-year-old took to Twitter to refute claims they were dating.

He wrote: 'Apparently dancing in a club + helping someone to their car = dating. People are funny.' 

Tongues wagging: On Thursday night the model was seen dancing with Nick Simmons and after he walked her to the car, many speculated they were dating 

Not true: Nick, who is the son of rocker Gene Simmons, denied the pair were an item on Twitter

Amber filed from Wiz last month after just 14 months of marriage citing irreconcilable differences.

However, the model has claimed her husband cheated on her posting on Twitter: 'I would never ever ever cheat on my husband in a million years I think u guys know this.....'

A few minutes later, Amber told her 2 million Twitter followers: 'Unfortunately my now ex husband can't say the same....'

Wiz reportedly was caught by the star in bed with twin sisters.

In her divorce filing Amber has petitioned for full custody of son Sebastian with Wiz to have visitation rights. Wiz has fought back however, filing for joint custody.

Battle looming: The 30-year-old model has filed for full custody but Wiz has responded seeking a shared parenting agreement