Credit: Ashley Benson Instagram

The best birthday gifts are the ones that come straight from the heart, and there’s no better way to describe the awesome present Ashley Benson got her Pretty Little Liars co-star Shay Mitchell for her 27th birthday. What did Ash give her bestie? The answer may surprise you!

“Thank you @AshBenzo for your generous donation! Always supporting everything I do :) you have made my day and so many other girls with this!” Shay tweeted at her co-star and bestie in the wee hours of the morning, presumably after Ashley made a donation to the Somaly Mam Foundation (SMF), a non-profit aimed at ending the global human trafficking that sees an estimated two million women and children sold into sex slavery every year. Shay’s birthday wish is that friends, family, and fans hoping to give her a present for the big 2-7 do it in the form of a donation to the SMF through this Crowdrise page. Shay volunteered with the organization during a trip to Cambodia in 2011.

“During the trip that I made to Cambodia, I have witnessed, first hand, the incredible work that SMF does, and it is life-changing for all involved,” Shay wrote on the Crowdrise page. “This year, as I celebrate my birthday, I would like to ask all of you to find it in your hearts to give me the best birthday gift ever, and make a donation to The Somaly Mam Foundation.  Whatever you can contribute would be greatly appreciated, both by me, and the women and children whose lives you help save.”

We love that Ash is so supportive of her friend. These two are super adorable together, especially when celebrating holidays. They rang in the New Year with a trip to Disneyland and celebrated Halloween with a haunted hayride. Basically, these two are so much more than just co-stars and, as Shay pointed out, always there to support one another in whatever they do.

Catch the next episode of Pretty Little Liars on June 10, 2014 at 8 p.m. ET on ABC.

Kayti Burt is a contributing writer for Wetpaint Entertainment with a penchant for all things pop culture. Follow her on Twitter and Google+!