Ashlee Simpson celebrates her 37th birthday with family including husband Evan Ross

She rang in her 37th birthday on Sunday, October 3rd.

And four days later, Ashlee Simpson shared a number of snaps from her birthday celebration with her family.

Ashlee celebrated with husband Evan Ross, their children, as well as both family members from both sides of their famous families – the Simpsons and the Ross’.

Family is everything: She rang in her 37th birthday on Sunday. And four days later, Ashlee Simpson shared a number of snaps from her birthday celebration with her family

Ashlee and 33-year-old Evan’s children were in attendace: daughter Jagger Snow, six, and son Ziggy Blu, 11 months. Plus Ashlee’s son from her previous marriage to Pete Wentz: Bronx Wentz, 12.

Her older sister Jessica Simpson, 41, attended with her husband Eric Johnson and their three children: daughters Maxwell Drew, nine, Birdie Mae, two, and son Ace Knute, eight. 

 Evan, who is the son of Diana Ross and Arne Naess Jr, had siblings Tracee Ellis Ross, Chudney Ross, Rhonda Ross also at the bash.

Ashlee’s parents Tina and Joe Simpson were on hand for the backyard get-together as well.

So sweet: Ashlee celebrated with husband Evan Ross, their children, as well as both family members from both sides of their famous families – the Simpsons and the Ross’; Ashlee with Evan, and their kids Jagger and Ziggy; plus her son Bronx, from her first marriage to Pete Wentz

So cute: Ashlee’s parents Tina and Joe Simpson were on hand for the backyard get together

Ashlee shared a number of images from the evening, which seemed to include swimming and also a giant cake and cookie cake.

She captioned the photos: ‘Birthday love.’

Ashlee wore a birthday headband, paired with a black top and taupe colored trousers.

Wow: Ashlee shared a number of images from the evening, which seemed to include swimming and also a giant cake and cookie cake

Strike a pose: Ashlee seen with her dad Joe (right)

On Tuesday, Ashlee attended the premiere of LOL Surprise with Evan and Jagger; the event took place at Hollywood Forever in Hollywood.

Ashlee donned a leather blazer with jeans, adding a white top and a Bottega Veneta bag.

On October 29, Ashlee and Evan, who wed in 2014, will celebrate son Ziggy’s first birthday. 

Stepping out: On Tuesday, Ashlee attended the premiere of LOL Surprise with Evan and Jagger; the event took place at Hollywood Forever in Hollywood