Kylie is wearing a MSFTS REP shirt, it is Jayden Smith’s line. Click here to see the website, although Kylie’s exact shirt is not available online. She is also wearing her Markus Lupfer skirt (she has worn this a bunch of times, including to the Justin Bieber concert), but it is sold out. Try this Free People skirt ($150), or this Theory skirt for great alternatives. Kylie is also wearing basic, black suede point-toe heels.
Kendall is wearing her Alaia boots, which are sold out and not available on ebay currently. She is also wearing a leather skirt, similar to this Alexander Wang skirt, for a cheaper alternative, try this $275 skirt from All Saints or this $214 skirt. I could not find her exact top, but you could try this or this.