Sammi Sweetheart loves to share old photos and this time, she's doing it for a good cause.

The former Jersey Shore star took to Instagram posting a throwback pic of herself posing in front of a blue background. High school picture day, much?

Along with the pic, Sammi wrote, "Wow this is old school! Education unlocks promise. Share a photo with #GiveBackToSchool & @Chegg will donate $10 to @PencilsofPromise. pencilsofpromise.org." We love to see this guidette spreading the good!

Sammi looked gorgeous even before her reality TV days, but this Seaside gal has definitely changed from before the show to now. Sammi has slimmed down since the early Jersey Shore seasons and has also matured in her personal life. She and Ronnie, who used to fight like it was their job on the show, now live together and seem to be going strong.

Do you think Sammi has changed a lot over the past few years, or is she still the same "sweetest bitch you'll ever meet?" Sound off in the comments!