Penelope is undeniably mom Kourtney Kardashian's little princess.

The mother-daughter duo ran errands in Calabasas on Wednesday. Penelope looked like a little angel in a white dress and her signature headband, while Kourt was retro in a striped white and blue crop top, brown drawstring pants, straw flats, and cat-eye sunglasses.

Kourtney's little tot is getting big! Penelope turned one on Monday, promoting a flurry of Twitter birthday wishes from the Kardashian-Jenner clan, including aunts Kim, Khloe, Kylie, and Kendall. In fact, new mom Kim broke her relative social media silence to write, "Hope my little Peep had the best 1st birthday today."

Speaking of growing up, Kourtney's three-year-old Mason will be attending preschool this fall. Kourtney and Khloe scoped out a private school in Sherman Oaks on Tuesday.

The eldest Kardashian has had a busy few days. She jetted to Las Vegas to surprise beau Scott Disick as he hosted the Sapphire Pool and Day Club on Saturday. It's nice to see that the parents of two are scheduling some alone time together.