Sofia Richie flashes a hint of sideboob in a black bikini on Kylie Jenner's yacht in Monaco

She's been lapping up the luxuries on Kylie Jenner's $250 million yacht.

And Sofia Richie was still enjoying her European adventure on Friday, as she sported a skimpy black bikini aboard the yacht in Monaco,

The model, 20, flashed a hint of sideboob in a skimpy black bikini as she relaxed on the luxury liner with her boyfriend Scott Disick, 36.

Chic: Sofia Richie, 20, was still enjoying her European adventure on Friday, as she relaxed on Kylie Jenner's $250 million yacht in Monaco

Sofia flashed a glimpse of her amazing bikini body as she sported the busty black bikini top, before later covering up in a matching silk robe.

The daughter of singer Lionel Richie pulled her blonde tresses into a simple up-do as she chatted to beau Scott on the deck of the boat.

Sofia has been enjoying the luxurious life on Kylie's lavish yacht after some of the Kardashians travelled to Europe to celebrate the beauty billionaire's 22nd birthday.

Flawless: The model was oozing summer chic in an all-black beach look as she relaxed on the luxury liner

Chic: Sofia flashed a glimpse of her sideboob in the revealing black string bikini as she strolled around the yacht

Chatty: The daughter of singer Lionel Richie was also chatting away to her boyfriend Scott Disick

Lovely: Sofia later covered up in a silk black robe, with her blonde tresses pulled into a sleek up-do

Sensational: The stunning star has been living it up on Kylie's yacht (just seen here in blue) as the billionaire celebrated her 22nd birthday with boyfriend Travis Scott

Fun: The day before, Sofia was seen getting snap happy with Kylie's birthday posse as they chilled out ahead of her sunbathing session

The day before, Sofia was seen getting snap happy with Kylie's birthday posse as they chilled out ahead of her sunbathing session.

Scott and Sofia's getaway comes as he admitted he was insecure when he was dating ex-girlfriend and the mother of his three children, Kourtney Kardashian, 40.

On a preview of his new real estate show Flip It Like Disick, the reality star talked about his on-off relationship with Kourtney and reflected on how much he's grown up since then.

Sensational: The star appears to be having a whale of a time as she continues to relax on the luxury yacht

Lovely: Sofia joined boyfriend Scott, Kylie, Travis alongside 'momager' Kris Jenner and her boyfriend Corey Gamble on the holiday

Perfection: Focused on her phone, Sofia slung a towel over her shoulder as she pulled on the robe following a spot of sunbathing

Together: Scott and Sofia's getaway comes as he admitted he was insecure when he was dating ex-girlfriend and the mother of his three children, Kourtney Kardashian, 40

Supportive: The star also said that he's grown up since then and appears happier than ever in his relationship with Sofia (above)

Jovial: Sofia has been parading her tanned physique in a slew of holiday looks both on and off the yacht

'I feel like years ago, when I was, like, younger and stuff, I don’t know that I’ve been, like, motivated to, like, do all these things for the kids and, like, build houses for them,' he said to Kourtney while they chatted at his house.

Scott explained that he used to be conscious of people judging him for being 'uncool' for having children so young. 'I was just so insecure that, like, everybody would look at me like I'm not cool or young anymore...

'And now, I couldn't be happier. But I'll be honest, I would have never imagined driving the kids to school and stuff. Now that it’s part of life and, like, they want me to be there, I’m happy to be there. You know what I mean?'

Scott and Kourtney dated for nine years on and off from 2006 to 2015, and share have three children, Mason, nine, Penelope, seven, and Reign, four.

Stylish: Sofia wrapped her toned physique in the black silk robe as she enjoyed some downtime on the lavish yacht

Having fun? The Kardashians first travelled to Positano in Italy earlier this month, but have now sailed their yacht to Monaco

Grand: Kylie shelled out $1.2 million per week to rent the luxury liner, which can comfortably accommodate dozens of guests

Wow! The 300-ft watercraft, named Tranquility, boasts rooms for 22 guests including a master suite and three VIP state rooms

Casual: Scott was also seen heading inside the yacht as he continues to enjoy the romantic break with girlfriend Sofia

Kylie shelled out $1.2 million per week to rent the luxury liner, which can comfortably accommodate dozens of guests.

The 300-ft watercraft, named Tranquility, boasts rooms for 22 guests including a master suite and three VIP state rooms, a spa, a beauty salon, a cinema, a gym, a deck-pool, an outdoor bar, two helipads and is serviced by a 29-strong crew.

After heading to various hot spots on Italy's Amalfi Coast, the family travelled to the South of France, hitting St Tropez, before travelling to Monaco.

Guest facilities on the yacht include a beach club which transitions through to a fully-equipped gym boasting a large balcony on the starboard side allowing direct access to the sea.