Sofia Richie Pens Sweet Message for Mother's Day

Sofia Richie keeps it simple in an all-black ensemble while grabbing a bite to eat with friends on Friday night (May 6) in West Hollywood, Calif.

Later that weekend, the 17-year-old model posted a sweet message and photo on her Instagram page for Mother’s Day.

PHOTOS: Check out the latest pics of Sofia Richie

“Happy Mother’s Day to the coolest chick I know! I love you big time.. Oh and also thank you for giving birth to a legend @bobbyskallywags,” Sofia captioned the pic, which you can see below.

10+ pics inside of Sofia Richie out to dinner in West Hollywood…