Fall is most definitely in the air, and this perfect autumn weather is bringing out tons of famous families for some outdoor activities!

We've got the round-up of all the A-list, family filled activities that took place over the weekend -- check it out!

Isla Fisher and Sacha Baron Cohen

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Happily married couple Isla and Sacha took their two daughters to a birthday party in Santa Monica, California. The entire family seemed to enjoy themselves, as the girls got their faces painted with mom and dad looking on!

Christina Aguilera

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Christina, joined by boyfriend Matthew Rutler, cheered from the sidelines as her son Max participated in soccer practice. The threesome left the field all smiles afterwards, with X-Tina walking hand-in-hand with her son. Awwww!

Reese Witherspoon's Clan

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While Reese stayed at home with the new baby, her kids Deacon and Ava Phillippe were joined by their stepdad Jim Toth for Deacon's soccer game. While Ava keeps growing taller, Deacon is turning into quite the stud, huh?!

Matthew McConaughey

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It was a full blown family affair for Matthew, who joined his parents for church in Austin, Texas. Don't worry -- his lady love, Camila Alves, was also their with their kids Levi and Vida... as well as her growing baby bump!

Jennifer Garner and Ben Affleck

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With new baby Samuel at home, Jen and Ben took turns spending time with their daughters this weekend! On Saturday, Jennifer took Violet and Seraphina to a birthday party, while Ben took the Sunday shift, taking the girls on a trip to Barnes and Noble.

Pete Wentz

Bronx spent the weekend with dad Pete and his girlfriend Meagan Camper. The trio hit up Petco to get their adorable pooch groomed. Ummm... also... can we just look at how fast Bronx is growing up?!

Heidi Klum

It was a very busy weekend for Heidi's crew, who hit up the pumpkin patch, a soccer game AND a family gym class together! Heidi could not look more glowing and happy while spending time with her kids -- and new beau Martin Kristen!

Gwen Stefani

Extended family edition! A smokin' hot Gwen took her boys Kingston and Zuma Rossdale to a birthday party at her brother's house on Saturday.

Nick Cannon and Mariah Carey

Nick and Mariah took the twins (Morroccan and Monroe) to Family Fun Day at the Santa Monica Pier. No worries, though -- they got a break from mom and dad duty to ride the roller coaster!

Jessica Alba

Jessica and her hubby Cash Warren took the girls Honor and Haven to the pumpkin patch. Honor seems to have made out the best during the family outing -- check out her beautiful, butterfly-ed face!

What is your favorite family activity!?

Photos COurtesy of: Fame/Flynet