The sweet life! Kylie Jenner eats cake as she and boyfriend Tyga celebrate his son King Cairo's third birthday at lavish bash

They flirted on set while filming his new music video in Los Angeles on Thursday.

But Kylie Jenner happily took a back seat when her rapper beau Tyga threw a lavish birthday party for his little boy, King Cairo, who turned three on Friday.

The proud papa, who is 25, held the afternoon bash at Racer's Edge in Burbank, California.

Sweet treat: Kylie Jenner happily ate cake as she took a back seat when her rapper beau Tyga threw a lavish birthday party for his little boy, King Cairo, who turned three on Friday

Sweet treat: Kylie Jenner happily ate cake as she took a back seat when her rapper beau Tyga threw a lavish birthday party for his little boy, King Cairo, who turned three on Friday

And the 18-year-old reality star watched as he welcomed her half-sister Kourtney Kardashian, 36, and brother-in-law Kanye West, 38, along with their children ad other guests.

Kourtney brought along five-year-old Mason, Penelope, aged three, and 10-month-old Reign while Kanye carried two-year-old North, whom he shares with Kim Kardashian.

It was a fun kid-friendly party and something to distract from Lamar Odom's current health crisis in Las Vegas following his collapse on Tuesday during a four-day drug and alcohol-fueled bender at a brothel. 

Kylie and Tyga, meanwhile, appeared to spend very little time together during the event, as Tyga made sure his little boy had fun on the blow up slides, the mini race track and the Company 77 fire engine-turned-food truck.

Carrying a gift: The 25-year-old, who wore white for the bash, was the perfect papa making sure his little boy and his guests enjoyed the afternoon

Carrying a gift: The 25-year-old, who wore white for the bash, was the perfect papa making sure his little boy and his guests enjoyed the afternoon

Grabbing a bite to eat: But it didn't look as if the rap star was nibbling on cake

Grabbing a bite to eat: But it didn't look as if the rap star was nibbling on cake

But both were spotted separately feasting on what looked like birthday cake.

Kylie, who had dumped the hair extensions she's been seen in recently, was casually dressed in a white hoodie, black and grey patterned skinny jeans and sneakers.

Like his girlfriend, the rap star also opted for a white hoodie teamed with white shorts, white sneakers, a red cap and a very heavy gold chain.

Hanging out: The couple weren't actually seen together during the afternoon's festivities but they were close by
Hanging out: The couple weren't actually seen together during the afternoon's festivities but they were close by

Hanging out: The couple weren't actually seen together during the afternoon's festivities but they were close by

Tyga - real name Michael Ray Nguyen-Stevenson - shares King Cairo with ex-fiancee Blac Chyna.

The Kardashian and Jenner family has been at the centre of a media frenzy since Khloe's estranged husband Lamar Odom was found unconscious at a brothel near Las Vegas on Tuesday.

Things seem to have improved for the 35-year-old former NBA player as he reportedly said 'Hi' to Khloe when he opened his eyes while giving her a thumbs up, according to an E! News report on Friday.

Me and my boy: Tyga, real name Michael Ray Nguyen-Stevenson, posted these cute snaps of himself in the fire truck's built in photo booth on Instagram

Me and my boy: Tyga, real name Michael Ray Nguyen-Stevenson, posted these cute snaps of himself in the fire truck's built in photo booth on Instagram

He only has eyes for her: Tyga and Kylie flirted on the set of his new video in Los Angeles on Thursday

He only has eyes for her: Tyga and Kylie flirted on the set of his new video in Los Angeles on Thursday

 

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