By Meghan Overdeep
Dec 02, 2015 @ 11:30 am

After the Black Friday and Cyber Monday dust had settled, Americans rallied on Tuesday to celebrate Giving Tuesday, an annual day of generosity and giving back. Celebrities and non-celebrities alike supported the charities of their choice with donations both big and small.

Southern sweetheart Reese Witherspoon lent a hand to Girl's Inc. in Tennessee and stopped to take a photo with a group of young girls the organization is working to empower and inspire. "While in #Nashville, I had the great opportunity to meet these amazing young women and talk to them about financial planning and setting goals. I see bright futures ahead!" the actress captioned the snap (above), which she posted on Instagram.

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And she wasn't the only celebrity using her clout to raise both money and awareness for worthy organizations: Scroll down to see the causes celebrities chose to support via social media on #GivingTuesday.

Katherine Heigl:

Lucy Hale:

Katie Holmes:

Cindy Crawford:

Kristin Davis:

Joe Jonas:

Jessica Chastain:

Elizabeth Banks:


for the love of fur babies everywhere! support @humanesociety today for #givingtuesday

A photo posted by Kesha (@iiswhoiis) on

Gywneth Paltrow:

Amanda Seyfried:

Robin Wright:

It's #givingtuesday! Please join me and support @actionkivu in their goal to raise $4000 for the holiday season!

A photo posted by Robin Wright (@robingwright) on

Sarah Silverman:

Lena Dunham:

It's #givingtuesday, so it's also the perfect #dogdayafternoon. So many causes have my heart, but the pups of @seespotrescued always steal it ❤️ I mean, those spindly legs!!! @seespotrescued description: Please Stand Up and meet Marshall Mathers! At a lean 40 pounds, Marshall is slim, but definitely not shady. He is a happy-go-lucky 2 1/2 yr old hound mix with adorable blonde eyebrows and matching blonde boots. This cheerful pooch gets along great with people and other dogs. He absolutely loves to play and gleefully smiles and sticks out his tongue when he’s goofing around. You can forget about Dre, but don’t forget about Marshall Mathers, who is waiting patiently with 8 miles of love to give to his fur-ever family. Marshall is neutered, microchipped, and up-to-date on vaccines. Email for an adoption application.

A photo posted by Lena Dunham (@lenadunham) on

Lauren Conrad:

Emma Roberts:

Sophia Bush:

Matthew McConaughey: