The first line of the Rita Ora collection has been rolling out and selling fast. Currently there are some of the apparel items such as the jacket, tee, skirt, bra, and beanie in stock but they are limited. Keep an eye on the Rita Ora page here for updates and details.
Based on what we know, the 3 shoes (Bankshot, Honey 2.0 and ZX 500 2.0) have been on the US site at one time but likely have all sold out. According to UK site there were only 500 pairs made for each so the stock will be very limited. You can see more items including the shoes in stock at the UK site.