Someone just got a healthy dose of cooties!
But when she gave the adorable toddler a kiss on the cheeks, Mason couldn't help but blush.
"He wiped if off after," Kendall captioned on Instagram as she shared a smooth with her beloved family member. Too cute, dolls!
Mason has received plenty of love from Kendall, Kourtney and his large, loving family this summer.
Just last Friday, Mason traveled south for a family day at the San Diego Zoo. During the visit, the fashionable tot got up close and personal with giraffes.
Earlier in the week, Kim Kardashian also treated her nephew to a daytime movie date at The Commons in Calabasas, Calif. They enjoyed an afternoon screening of the kid-friendly film, Teenage Mutant Ninja Turtles.
It's safe to say Mason is feeling the love this month!
Watch a special 90-minute Keeping Up With The Kardashians leading up to Kim's wedding on Sunday, Aug. 31 at 9/8c on E!