Rob Kardashian Gets Blac Chyna's Help with His Smile

Rob Kardashian steps out with his fiancee Blac Chyna on Thursday afternoon (May 12) in Miami, Fla.

The 29-year-old reality star and the 28-year-old pregnant model were seen having lunch at Havana 1957 and shopping at the Adidas store.

Rob took to Instagram that day to post about how Chyna helps him whiten his smile.

“Working on my pearly whites with help from my beautiful assistant/wifey @blacchyna,” Rob captioned the below photo along with some sponsored info on how to purchase the product.