LA’s most talked about couple Kim Kardashian and Kanye West couldn’t resist slipping off for a sneaky kiss when they took Kylie and Kendall Jenner out for dinner on Tuesday.

After a family trip to watch the The X Factor, Kim treated her sisters to a meal at Crustacean Restaurant in Beverley Hills, but couldn’t see to tear herself away from her musician boyfriend.

Pucker up: Kim Kardashian gives boyfriend Kanye West a sneaky kiss in a Beverly Hills restaurant on Tuesday

The reality star, who’d sat in the audience to watch sister Khloe present the talent show earlier in the evening, clearly felt the need to spend some time with her two younger sisters, as well as her boyfriend.

Proving that she was still a doting girlfriend, she took Kanye outside during dinner and gave him an intimate kiss up against the wall.

The couple, who seem to be dressing more and more alike as their relationship progresses, both stepped out in leather outfits.

PDA: Kim and Kanye slip outside for an intimate moment during dinner with her young sisters

Dressed to impress: The couple look in-sync with their styles, both wearing leather

Kim showed off her world-famous curves in a figure-hugging, knee-length red skirt, paired with a sheer, black blouse.

Her rapper boyfriend was also leather-clad, wearing a pair of black leather trousers and a black blazer jacket.

Kendall showed off her super slim figure in a pair of high-waisted short and a loose-fitting black top, while Kylie went for an edgier look with skin-tight leather trousers and a T-shirt.

Dinner party: Kim takes her sisters Kylie and Kendall out for dinner after watching The X Factor

Can’t get enough: Kanye sat with Kim’s family during the show

Kanye, who sat with Kris and Bruce Jenner and Kim’s little sisters during the X Factor filming, seemed completely relaxed with the high-profile family.

Kim’s mother Kris, who’s never been shy to admit how she feels about her daughters’ partners, recently spoke out about the relationship on Jay Leno:

‘He’s a really great guy. He’s really great, he’s great with Kim. They’re really happy, and when your kids are happy you’re happy. I think they’re good together,’ she said.

The 57-year-old also commented about the recent divorce rumours that have been circulating her and husband Bruce:

‘That is the most ridiculous … we’ve been married almost 22 years. We fight all the time. Everybody fights after 21 years, but he kind of stays away, gets to the golf course and tries to stay out of my way,’ she said.

Part of the family: Kanye seems relaxed and happy to hang out with his girlfriend’s family

Family man: Kanye watches Khloe present the show with Kim and the rest of the Kardashian clan