Celebs Flying High In Hot Air Balloons ... Up, Up and Away!

The sky's no limit when you're flying high ... Today is "Hot Air Balloon Day," and there are some daring stars addicted to altitude. Come soar to new heights with Hollywood!

Love is in the air with "Dancing With The Stars" pro Val Chmerkovskiy and wifey Jenna Johnson, who snapped a mid-flight selfie ... and the balloon life chose NBA player Kevin Love, who shot a moody pic before take-off.

And Olivia Rodrigo was on Cloud Nine, literally, while in Mexico City -- floating her first hot air balloon ride ever!