Are those Spanx we spy? Super slim Selena Gomez, 19, appears to wear a pair of control underwear to perform at Jingle Ball

By Jade Watkins

Last updated at 5:01 AM on 3rd December 2011

She is only 19-year-old and possesses a super slim figure.

But it seems that Selena Gomez may be the latest star to sport a pair of Spanx.

What appeared to be a pair of the control underwear was on display under the teen's super short red-sequined tutu dress as she performed at the Jingle Ball in Sacramento on Thursday night.

Are those Spanx? Selena Gomez wore what appeared to be a pair of Spanx as she performed at the Jingle Ball on Thursday night in Sacramento, California

But the apparent wardrobe malfunction didn't appear to bother the singer, who did a rendition of two Katy Perry songs including the pop star's current release 'The One That Got Away.'

Selena told the crowd that the fellow 27-year-old singer was once of her idols.

'One of my inspirations is Katy Perry. She’s been really wonderful and really good as a person to me. She’s given me two songs of hers so, in honor of Katy, we wanted to do this song for her,' she said ahead of the performance.

Flash: What appeared to be a pair of the control underwear was clearly on display under the teen's super short red-sequined tutu dress as she belted out her tunes

Meanwhile, the teen recently revealed that she got an early Christmas present, with the news her mother and stepfather are expecting a child.

'Momma and Brian are finally letting me share the news,' she tweeted last week.

'My mommy's carrying my baby brother or sister :).'

Mandy, a former stage actress, is 35. She gave birth to Selena at 16 and named her after the famous Tejano singer.

Not a care in the world: The apparent wardrobe malfunction didn't appear to bother the singer, who did a rendition of two Katy Perry songs including the pop star's current release 'The One That Got Away

The former Wizards of Waverly Place star proudly posted a photo of her mother and her stepfather, Brian Teefey on her social networking site.

'I’m the happiest girl in the world,' Selena wrote, clearly excited to finally have a sibling.

It's great that she has something to bring her joy, given that she's stoically stood by her man Justin Bieber during his recent ugly paternity battle with fan Mariah Yeater, who claims that the 17-year-old singer is the father of her young son.

Christmas cheer: Selena certainly got into the festive spirit

Yeater says that she and the superstar had a brief backstage romp in Los Angeles last year.

Although he has already taken one paternity test, her lawyers are requesting that he take another.

According to the NY Daily News, Mariah Yeater’s lawyer, Jeffery Leving, is requesting that the singer take another test while she is present.

Living doll: With her perfect complexion and red lips, Selena looked like a living doll in this picture she posted on her Instagram account

He told the site: ‘I want a new DNA test with both sides together at a lab in California as soon as possible. soon as I tell her to do it, she’ll do it. We need proper protocol and a chain of custody.’

It has also been reported that he is speaking with Bieber’s lawyer Howard Weitzman.

Weitzman repeatedly has refused to comment on the claims.

Early Christmas present: Meanwhile, the teen recently revealed that she got an early Christmas present, with the news her mother Mandy and stepfather Brian, pictured here with Selena, are expecting a child

A spokesperson for Justin told MailOnline: 'Justin has taken the test. There is currently no case pending against him and there's been zero evidence supporting this claim.'

Bieber also confirmed that he had taken the test while appearing on The Late Show.

He told host David Letterman that he could 'smell a weasel' about the allegations.

'It's pretty crazy [that] people make up false accusations,' said the Baby singer.

'It's going to happen. Being in the spotlight, people can say whatever.'