. >> reporter: if showcasing puerto rico's beauty was the goal, zuleka rivera was the answer. >> theysic. i just want you to be here. just walk from here to there. and just feel the music. whatever you feel about the song, just do it. so pretty much i was freestyling. >> miss puerto rico! >> reporter: that's her back in 2006 being crowned miss universe, bringing home the win for puerto rico. the dress she wore in that video a nod to her pageant dress. >> when i saw the video it's like, everybody's having a great time. everybody's dancing. everybody's so happy. and that's what you see in puerto rico. >> reporter: turns out the single most-watched youtube video of all-time was all shot in one day. and edited here in this small studio in miami. >> this is where it happened. >> reporter: the finished product? ♪ despacito >> this field like a love song to puerto rico. >> it's a very sensual song. but i think the star of the show is puerto rico. it's such a special place. and it's an inspiration behind my music. >> reporter: fonsi who lives in miami was recently named tourism ambassador for