The glamorous siblings were snapped on the set of their E! series on Tuesday (12 August), looking incredibly dressed up for a simple day out.
Kim, 33, was wearing the skintight simple black frock we'd seen on her earlier in the day, while Kourtney, 35, showcased her blossoming baby bump in a white lace effect dress. Is it just us or do the sleeves remind you of spider webs?!
Both girls wore pretty flashy heels for the occasion too.
Kim jetted into New York at the start of this week for a round of publicity appearances to promote the E! show, including an interview on the Today breakfast show yesterday, where she admitted she wanted more kids but wasn't thrilled about the idea of going through pregnancy again.
"I grew up with siblings so if I could snap my fingers and have four I'd have four," said Kim, "but I do realise I'd have to through pregnancy again and I had a difficult pregnancy. Of course I want another child - I'd love two more.
"We'll see. I'll have one more and see what it's like."
Kourtney, meanwhile, is pregnant with her third child. She and long-time boyfriend Scott Disick are already parents to son Mason, four, and daughter Penelope, one, who have both appeared on the family reality show.
Production is currently underway on Keeping Up With The Kardashians spinoff Kourtney & Khloe Take The Hamptons, which will focus on Kourtney and Khloe's attempts to open a pop up boutique in the exclusive New York area.
Kim isn't billed as a regular cast member but is expected to make plenty of cameo appearances.
There's no word yet on whether Kim and Kanye West's baby daughter North, one, will have a part to play. The couple have been quite vocal in their desire to keep North off TV screens, although in recent months they have become more willing to show her off via pictures.
We saw little North out and about with Kim yesterday, wearing a super cute little black sun dress to match her mum.
The tot was born in June 2013.
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