HONOLULU - Bruno Mars put up a throwback on Instagram with a Happy Mother's Day message.

The photo shows the day he graduated from Roosevelt High School, writing he would 'give her a high school diploma, but didn't say anything about good grades.'

Mars says his mom believed in him, and was there every step of the way as he rose to stardom.

He wrote on the social media platform, "Happy Mother's Day Ma. Thank you for continuing to make me feel like I can do anything."