Singer Dolly Parton's Pigeon Forge, Tennessee amusement park Dollywood has been accused of discriminating against a lesbian couple.

Olivier Odom and Jennifer Tipton claim they were asked to turn a “Marriage is so gay” t-shirt inside out before being allowed to enter Dollywood's Splash Country, Knoxville NBC affiliate WBIR reported.

“I was in disbelief,” said Odom. “I didn't think it was the policy of Dollywood to discriminate against the LGBT community.”

“I looked at him and I was like really? He said, 'This is a family park,'” she added.

The “Marriage is so gay” t-shirt raises funds and awareness to support marriage equality.

Odom and Tipton married last year in South Carolina's Outerbanks. (South Carolina does not recognize such marriages.)

A spokesperson for the park said its dress code aims to prevent any other patrons from being offended, but added that Odom's case has yet to be reviewed.

The couple added that they felt singled out.

“It was just this one guy who picked out this one t-shirt, when there were rebel flags and offensive tattoos there,” said Tipton.

At the suggestion of the Campaign for Southern Equality, Odom wrote a letter asking the park to articulate its policy on LGBT visitors.