The ladies all wore huge sombreros for their get-together at Casa Vega, a popular eatery in Sherman Oaks.
"Friends For 18 Years," Kris tweeted about 30-year-old Nicole.
Missing from their "Kickin It Mexican Style" dinner was Kris' husband and Khloé stepdad, Bruce Jenner.
As RadarOnline.com has reported, the couple has been exposing some of the rough times they've had. And that's made watching Keeping Up with the Kardashians "crazy painful," Kris said.
Bruce Jenner's Golf Outing With Angie Everhart Doesn't Score Well With Kris Jenner