'We slept in the backyard!' Jennifer Garner is make-up free after putting her kids in charge for a Yes Day

When you put the kids in charge, anything can happen.

And for Jennifer Garner that meant a night sleeping in her backyard, under a canvas roof, after allowing her three children to plan the entire day's schedule.

Posting to Instagram, Ben Affleck's estranged spouse explained that she had decided to allow her kids a 'Yes Day' - when a parent indulges any of their child's requests, as long as they are safe.

 Time for some rest: On Friday, Jennifer spent a night sleeping in her backyard, under a canvas roof, after allowing her three children to plan the entire day's schedule

'We slept in the backyard!' Jennifer Garner is make-up free after putting her kids in charge for their annual Yes Day on Thursday

The concept - inspired by the children's book by Amy Krouse Rosenthal - is meant to give youngster's the power for one day a year, no matter how silly their plans.

Jennifer wrote of her Yes Day: 'You’ll never need coffee more than the day after Yes Day!'

She tagged her post 'five years running' and added: 'we slept in a tent in the backyard'.

Good jeans: Jennifer wrote: 'You¿ll never need coffee more than the day after Yes Day;' pictured out in LA on Thursday

True: Jennifer, seen Thurs, wrote: 'You’ll never need coffee more than the day after Yes Day!'

In conversation! After putting her kids in charge, Jennifer needed caffeine

Coffee day! After putting her kids in charge, Jennifer needed caffeine 

As for Jennifer, now that Yes Day is over for another year, she is indulging her own desires.

She wrote on Instagram: 'coffee is my yes day' and tagged her post 'National Coffee Day.' 

The 45-year-old is mother to Violet, 11, Seraphina, eight, and Samuel, five, with her ex Ben.

Mum's the word: The 45-year-old is mother to Violet, 11, Seraphina, eight, and Samuel, five, with her ex Ben

Mum's the word: The 45-year-old is mother to Violet, 11, Seraphina, eight, and Samuel, five, with her ex Ben

The two split in 2015 after 11 years of marriage, and have continued to co-parent their children together.

Ben is currently in a new relationship with Saturday Night Live producer Lindsay Shookus.

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