The 24-year-old actress was joined by her actor beau Austin Butler, and the pair had some fun together riding the bumper cars!
Earlier that day, Vanessa and a group of pals got henna tattoos and grabbed a bite to eat while roaming the festival grounds.
In case you missed it, check out the cute fashion shots Vanessa posted to her Tumblr before heading out for the day!
Check out more pics in the gallery: [04.14.2013] Neon Carnival with Austin Butler