And they're a privilege, not a right!

Sofia Richie strolled through the neighborhood in Beverly Hills yesterday, and she flaunted her perfectly toned physique in a pair of teeny denim cutoffs. We can see why boyfriend Scott Disick has been faithful!

The teen model and Kourtney Kardashian's ex recently took his kids on a Mexican vacation, and it made the 19-year-old realize that although their relationship is serious, she's in no rush to have a baby of her own.

"Sofia is already over mommy duty, after just a few days away with Scott and his kids. Even though they have the help of nannies on their spring break trip to Mexico, Sofia is quickly realizing how much work it takes to be a parent," a source dished to Hollywood Life.

So don't count on her following in Kylie Jenner's footsteps!

"She loves Scott’s kids but they are a handful. Sofia may be mature for her age, but she is still really young and is in no way ready to be a mom," the source added.

The Lord sure has one 'smoking lady!