The Keeping Up With the Kardashians star
started the process a few weeks ago, and shared an Instagram pic of the progress. "Well @SimonOurianMD1 and I had a fun morning. The end of an era," she wrote. "Got this bad boy when I was 16.... Not so cute anymore. I should've listened to Kim when she told me, 'You don't put a bumper sticker on a Bentley.' Bye-bye bumper sticker!!!"