If Selena was missing boyfriend Justin after a super romantic visit with him in South America (and we’re sure she was) she hid it well at LA’s premiere of horror film, The Thing!

Boy, that Selena Gomez travels fast! Just Friday Oct 7, she was spotted having a fun lunch with Justin Bieber at the Outback Steakhouse in Sao Paulo, Brazil. And the couple shared a $17,000 a night Presidential hotel suite at the five-star Tivoli San Paulo Hotel in San Paulo, Brazil.

While Justin continues his concert tour in Buenas Aires, Argentina, Selena stunned on the red carpet of science fiction horror film, The Thing in LA, Oct. 10.

The pop princess showed off her long tan legs in black sequin short shorts, a sheer white blouse over a camisole and vampire red nails.

It’s got to be tough for Selena to be separated from Justin at least until the end of October. She leaves for a two-week concert tour of Canada starting in Victoria, British Columbia, while Justin won’t be done in South America until after his last show in Caracas, Venezuela, on Oct. 25th.

The crazy-for-Selena singer called her “mamacita,” which translates to “sexy lady,” in English, during an interview in Brazil.

Well, Selena just proved again she IS one sexy lady.