Jamie Lynn Spears shares video of sister Britney's kids enjoying a 'cousins vacation'

The Spears family is on the go this summer!

Britney Spears' sister, Jamie Lynn, posted a video to Instagram on Monday of her many adventures with her nephews, 13-year-old Sean and 12-year-old Jayden, as well as her two kids, 11-year-old Maddie and 1-year-old Ivey. "COUSINS VACA 2019," Jamie Lynn captioned the video. "Couple lost credit cards💳, & a visit to the ER🏥, but made many more good memories that we will have forever."

The video shows all the excursions the group took, including trips to the bowling alley and the aquarium, taking in a baseball game, and some family meals. The 28-year-old former Nickelodeon star also took to her Instagram Story to share even more photos and videos from the trip.

Last week, Jamie Lynn posted a photo of her sister and Kevin Federline's sons looking all grown up at the baseball field. "Everyone had a good time at the @braves game," she captioned the image. 

Also last week, Britney made her red carpet debut with boyfriend Sam Asghari at the Los Angeles premiere of Quentin Tarantino's Once Upon a Time in Hollywood. 

A source told ET that Britney and Sam "encourage and support each other" through everything and noted how close the 37-year-old pop star's boyfriend is to her kids.

"For Britney, being a mother is the most important part of her life," the source said last month. "She is the most content whenever she is around her boys. Sam is also very involved with the kids' lives. The boys appreciate it when they all spend time together as a family."

"Her kids love when Sam is around," the source added. "They have from the beginning of the relationship. He gets along with all of them very well."

See more photos of Jamie Lynn Spears and her kids together:

27 PHOTOS
Jamie Lynn Spears with her daughters and family
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Jamie Lynn Spears with her daughters and family
Ivey’s first time seeing her Auntie Britney💕
Always talking that S........
👨‍👩‍👧‍👧
♥️FAMILY♥️
So excited to share all of our first family pictures with y'all!! Thank you @people for sharing our stories and thank you to @studiotranphotography for the beautiful photos! 📸💕 Link in my bio
State record
Cousins came to watch Maddie play
Ivey
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Happy 4th 🇺🇸
Maddie and I had so much fun on @officialdoubledare! 💙❤️ Can't wait for y'all to see it! Link to more pictures in my bio
Baby WATSON coming 2018
New Captain
We got to see our Pony today for the first time in 2 months. 6 more months to go and she will be back home.
Race day
My #1’s ♥️⚾️
Ivey’s best friend has arrived👯Can’t believe our girls are only 6 weeks apart- we are in trouble!!! Welcome to the world #KambrySue👶🏼We love you💗p.s.(this is @brandiblair22 baby, I had my baby 6 weeks ago)
Maddie’s team went undefeated this weekend. We are very proud of her and the team!!!
My best gal
High Flyer
Pony, Maddie, and Nice
Maddie, Preston, and Jayden Christmas Eve duck hunt
Happy Birthday to my mom❤️🎂🎈Couldn’t ask for a better woman to lean on during all the stages of life... she’s the best Mee-Maw to all of our babies and she’s my best friend... love you💋♥️
We took the girls back to the place we visited right before Jamie asked me to marry him years ago....Reminiscing of when we use to like each other 😂♥️👨‍👩‍👧‍👧
Maddie and I had so much fun on @officialdoubledare! 💙❤️ Can't wait for y'all to see it! Link to more pictures in my bio
We are loving our Highway 3 blanket!! 😃💕 Check out @shophighway3 and use code JLS to get 25% off your entire order! #ad
Getting her ready for dove season
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