While in Australia promoting "17 Again" Zac gave an unsung hero, 9 year old Tierney Jasper the surprise of a lifetime when she met the 21-year-old (her favorite actor) at the Melbourne premiere.

Tierney walked 60 kilometres (just over 37 miles) to raise money for the Ronald McDonald House charity and is currently helping raise funds for the Make-A-Wish foundation. Her generosity and desire to help others is inspiring to all!