Kardashian and Hamilton: Five Months of Bonding!

was seen in on Sunday evening after arriving via private jet from London.

The 45-year-old star was with her boyfriend, race car driver .

The SKIMS founder kept a low profile in a pulled-down baseball cap with a zipped-up black-and-white jacket and bell-bottomed leather slacks.

The ex-wife of Kanye West was holding a black Hermes Birkin purse. 

The Formula One driver, 41, flew under the radar in a black hoodie worn up over his head as he added sweatpants and wore beige construction boots.

Hamilton has a break in his schedule as he does not have another F1 appearance until May 1 in Miami.

The stars, who have been friends for over a decade, have been going strong for nearly five months after they were first spotted getting cozy on New Year's Eve in Aspen.

They went public with their romance at the in February then subsequently went Instagram official.

Last week, Kardashian and Hamilton were spotted kissing for the first time when they went swimming in the Pacific Ocean near her home in Malibu.

They were most recently spotted together during weekend one of the Coachella Festival in California.

The duo were seen sweetly linking arms as they arrived for 's  set. 

They lingered near the front of the stage during the headlining set, staying close throughout the performance.

The couple were also joined by Kardashian's eldest daughter North from her marriage to rapper . The 12-year-old wore a long blue wig as they wandered around the festival.

The Skims mogul was hand-in-hand with Hamilton as they were guided through the crowded grounds to watch Bieber's anticipated performance.

The couple also sent fans wild as they were filmed trying to make a low-key arrival alongside their security team in the VIP area near the stage. 

They were first rumored to be dating in early February when they were seen on what appeared to be a romantic weekend trip in Europe.

They were spotted in the Cotswolds and later traveled from the UK to Paris.

That same month, they made a public appearance together and were spotted sitting together in the same VIP booth at the Super Bowl.

In early March, they enjoyed a luxurious trip together in Utah, and at the end of the month, the pair traveled to Tokyo alongside Kardashian's kids.

The star reportedly brought along her three youngest children: Saint, ten, Chicago, eight, and Psalm, six. 

A source previously said that the couple have an 'intense' relationship and added that her family 'adores' him.