12/08/2011 12:20 pm ET Updated Dec 08, 2011

Selena Gomez And Justin Bieber Are Not Engaged Says Rep (PHOTOS)

Of course they aren't engaged!

When Selena Gomez was spotted sporting something sparkly on her engagement ring finger, some people assumed Justin Bieber had popped the question.

The teenage couple are spending their one year-anniversary in Mexico -- where there will be wedding bells -- but obviously not their own.

The pair may be inseparable as of late, but Bieber isn't even old enough to vote yet and Gomez's rep was quick to clear up the rumor, telling Us Weekly, "She is not engaged."

Rather, 17-year-old Justin and 19-year-old Selena, are attending the wedding of a costume designer, Selena met on her Disney show "Wizards of Waverly Place."

According to TMZ, the actress is one of the bridesmaids and might even be singing at the reception.