Yesterday, as you probably know, was Kylie Jenner's 19th birthday. She initially celebrated with a red wig, but then she ditched the wig for something a little more swimming-appropriate because, well, she was in Turks and Caicos, duh.

Kylie was joined by her Vogue-covering sister, who coordinated with the birthday girl in two pieces of red fabric. Neither suit appears to be from the line they designed together.

Unlike Kylie and Kourtney, it's rare that the sisters ever dress alike, so maybe Kylie's birthday wish was to start twinning with Kendall every day of the year. We'll see how things progress.