At 103-years-old, Mary Cotter is definitely one of the oldest living superheroes around.

For the past 25 years, this "Wonder Woman" has been actively volunteering at the Montclair Senior Center in California.

On her birthday earlier this month, she dressed the part – but it was business as usual: serving coffee and tea to her friends.

To this day, she still drives to the center five days a week, and in leading by example, her message is clear.

"Don't let anyone tell you that with age, you have to lose anything," Brian Ross, a Montclair resident, told KABC.

(WATCH the video from ABC 7) Photo: KABC