Eva Mendes has done a selfless thing.

The 41-year-old actress has never shared a selfie ever, but decided the time was right to help one young boy suffering from cancer.

Eva Mendes shared a sweet selfie to Instagram on Wednesday as a way to raise money for a toddler named Andrew Wilson Wratten who is battling cancer.

This is a cause that means a great deal to Eva Mendes, as her brother Carlos is in his own battle with the disease.

“This is my first selfie and it’s for an amazing cause!” Eva Mendes wrote, sporting a T-shirt with the words, “Hope and prayers for Andrew Wilson.”

“Thank you all so much for helping support Andrew Wilson and his family …” she continued. “Together let’s help this family get their son the proper treatment that he needs.”

This is my first selfie and it's for an amazing cause! Thank you all so much for helping support Andrew Wilson and his family. Please, please donate – any bit helps! I'm going to sign this tshirt and give it away to one person who makes a donation within the next 48 hours. Click the link in my bio to donate. Together let's help this family get their son the proper treatment that he needs.

A photo posted by Eva Mendes (@evamendes) on May 20, 2015 at 2:32pm PDT

Eva Mendes, who is mama to a nine-month-old daughter with Ryan Gosling, posted a second photo of 17-month-old Andrew to Instagram and to her Facebook page.

In her selfie, she is wearing a T-shirt that reads, “Hope and prayers for Andrew Wilson.” She is promising to give the shirt to one person who makes a donation by clicking here in the next 48 hours.

This little guy, Andrew Wilson Wratten, is full of smiles, a ball of energy and VERY special to me. He has been undergoing treatment for neuroblastoma cancer. His family has spent the last year going through every parent's worst nightmare as they watch their little boy endure grueling treatment and they need our help. Please consider making a donation. Click the link in my bio for more info. From the bottom of my heart, I thank you in advance for your support of this precious little boy and his family. xx

A photo posted by Eva Mendes (@evamendes) on May 20, 2015 at 1:23pm PDT

“This little guy, Andrew Wilson Wratten, is full of smiles, a ball of energy and VERY special to me,” she wrote next to a super cute photo of the little guy. “He has been undergoing treatment for neuroblastoma cancer. His family has spent the last year going through every parent’s worst nightmare as they watch their little boy endure grueling treatment and they need our help.”

Later in the day, Eva Mendes posted a video to Instagram thanking her followers for all the words of support.

Thank you so much for your kind words for my little buddy Andrew Wilson. It means so much to his family. You still have a couple more hours to donate for a chance to receive a signed tshirt from me! Please, please consider donating – they could really use our help. Click the link in my bio for more info. Thank you for all the love. Sending it right back ! And then some!

A video posted by Eva Mendes (@evamendes) on May 21, 2015 at 12:02pm PDT