Gwen Stefani Shares a Sweet Kiss With Son Kingston on Family Day -- See the Pic!

Pucker up!

Gwen Stefani took a short break from her tour on Tuesday to post adorable pics of a family day with her kids, including one in which she shares a sweet smooch with her oldest son, Kingston. 

WATCH: Gwen Stefani Gets an Adorable Smooch From Blake Shelton at Her Son Zuma's Birthday Bash

"Kiss," Stefani captioned the pic on Snapchat. 

Snapchat

Snapchat

While 10-year-old Kingston stayed close to his mom throughout the day, he did have to share her attention with his brothers, Zuma, 8, and Apollo, 2, as well as her friends and tour staff, who joined them on the trip.

Snapchat

Snapchat

WATCH: Gwen Stefani and Concert Fans Sing 'Happy Birthday' to Her 8-Year-Old Son Zuma

Last Sunday, though, it was all about Zuma, as Stefani, 46 brought out the neighborhood -- and beau Blake Shelton -- to help celebrate her middle son's birthday. 

Snapchat

WATCH: Blake Shelton and Gwen Stefani Ranch It Up in Oklahoma During Epic Day Off From Tour!

But back to Stefani's little smooch -- she isn't the only celeb mom to make headlines for kissing her child on the mouth.

Just last month, Victoria Beckham received backlash (and support) for posting a photo of herself and daughter Harper sharing a kiss on Instagram. 

See more in the video below.