Selena Gomez goes from casual to glam during tour launch

Singer Selena Gomez kicked off her South American Tour at the House of Blues in West Hollywood, and she looked cute and casual before the show. She wore a white T-shirt with a taupe long skirt. She matched it with some standout fashion jewelry - a bold and big necklace.

Gomez then flew to Puerto Rico, and the 19-year-old singer donned a daring gown matching her new blue and purple highlights during the concert. She wore a cobalt blue dress with a plunging neckline and sequined hot pants. The ensemble included a flowing skirt that showed quite a bit of leg when she danced.

"Puerto Rico - 4 hours til show time, so excited to be back such a fun place to kick off my South American Tour it's like my second home. Love you all," she wrote on her Facebook page before the concert.

The tour will continue to Panama City, Mexico City, Santiago, Rio de Janeiro, Sao Paolo and Buenos Aires, among many more stops around South America.