On Tuesdays we wear white?

Yesterday Kourtney Kardashian stepped out for the first time since she split from baby daddy Scott Disick, and she lunched with sisters Khloe and Kim at Casa Escobar in Calabasas. Of course, reality TV crews were there to film the drama, and Kourtney looked pretty upset when the trio left the restaurant. Sounds like we'll know exactly what they were talking about when the footage airs later this year on Keeping Up With The Kardashians...

While Kourtney has been parenting her and Scott's three children and shooting the show, Scott has been partying in Monaco with his ex Chloe Bartoli, and most recently, Miami. So has he tweeted anything that would indicate he feels bad about splitting from Kourt and leaving their kids? Nope! Disick Instagrammed a promo shot advertising his club night at 1OAK in Las Vegas this Friday and wrote, "Come party with me this Friday in Vegas." Classy!

While no one else in the immediate Kardashian household has spoken out about the split, Brody Jenner did go on Today yesterday and say, "Uhhhh, Scott and Kourtney both are great. Obviously Scott’s gone through some issues in the past. He’s worked through them ... Honestly, when I saw those pictures, I just went 'Uh oh.’ I even showed my girlfriend and went, ‘This isn’t good.' It’s unfortunate."

We're very curious to see how Kourtney really feels about this and what her sisters have to say about Scott's cheating and general lack of concern for his family. In the meantime, Khloe let us know how the ladies felt when she posted the below shot on Instagram and wrote “IDFWU!!!!!” which is a reference to Big Sean’s breakup anthem "I Don’t F*ck With You."