The couple were spotted holding hands as they made their way inside the RYU eatery, making it the second time the pair have shown such affection in a number of days after she was seen clutching his hand during a shopping trip in New York.
Kim has also been sporting a pair of KW earrings, which is thought to stand for Kanye West, but Kim's sister Khloe Kardashian insists their relationship is not too serious at the moment.
In an interview on 'Watch What Happens Live', she said: ''We've known Kanye for like nine years, and we had a double-triple-foursome date.
''He's great with the family, but again we've known him for so long. It's not like some stranger getting into a hurricane.
''I don't think it's serious. I think it's too soon. But because they've been friends for so long, it's just so easy and that's something I love seeing for Kim - the easiness and how happy she is. And it's just more of a great Friendship and friendships make the best relationships.''