Ashlee Simpson carries her son as she heads to the park with family

By Christine Rendon For Dailymail.com

It won't be much longer until temperatures start dropping with the start of fall.

And Ashlee Simpson made the most of the last holiday of summer as she enjoyed some quality time with her family at the park.

The songstress, 36, was spotted walking to a park in Studio City on Labor Day with her baby boy Ziggy, nearly one, in her arms.

Fresh air with the family! Ashlee Simpson made the most of the last holiday of summer as she enjoyed some quality time with her family at the park in Studio City on Labor Day 

The Pieces Of Me hit-maker carried the newest addition to her family against her hip whilst clad in a sleeveless black dress and matching slides.

She injected a glam touch with a pair of trendy shades, gold hoop earrings, and a crossbody bag with a chain strap.

Once Ashlee had set Ziggy down, she turned her attention to her other two children as the trio walked across the street.

Ashlee held hands with her daughter Jagger, six, while her 12-year-old son whom she shares with ex-husband Pete Wentz, Bronx Wentz, walked nearby.

Doting mom: Ashlee held hands with her daughter Jagger, six, while her 12-year-old son whom she shares with ex-husband Pete Wentz, Bronx Wentz, walked nearby 

Keeping it casual! Evan remained close by whilst sporting a simple black T-shirt, track pants, and a green hat

Doting dad Evan remained close by whilst sporting a simple black T-shirt, track pants, and a green hat.

Evan and Ashlee tied the knot in August 2014 in a ceremony officiated by the groom's superstar mother Diana Ross who also sang at the reception.

Along with little Jagger they also share an infant son called Ziggy whom they welcomed into the world last October.

Forever and ever: Evan and Ashlee tied the knot in August 2014 in a ceremony officiated by the groom's superstar mother who also sang at the reception

Ashlee was first married to Fall Out Boy bassist Pete. The couple divorced after three years of marriage in 2011.

Though things did not work out romantically, the exes have remained friends.

A few years ago Ashlee and Evan dished to Us Weekly about the process of co-parenting Bronx with Pete and his girlfriend Meagan Camper.

'I think the fact that there is a lot of respect amongst all of us. That makes it easier. And we're all really close friends. It's easy, we got really lucky with that,' said Evan.

Ashlee meanwhile gushed that her ex and his girlfriend were 'wonderful' and that she 'lucked out' in her circumstances.

Not meant to be: Ashlee was first married to Fall Out Boy bassist Pete. The couple divorced after three years of marriage in 2011