Young Hollywood is in Santa Barbara where our host is taking Serinda Swan's 18 for 18 Charity Sky Dive challenge, but it's okay because he's not alone! "Pretty Little Liars" star Shay Mitchell is on hand for the event as well, and she accompanies us at every phase, including zipping up our onesies and scouting the best instructor! Then, before you know it... it's go time! Watch us take the plunge for a cause! Hosted by Oliver Trevena (@olivertrevena)..