From bondage to angel wings! Britney Spears flaunts her toned tummy in several wildly different costumes during her Las Vegas show 

Britney Spears has been performing her Britney: Piece Of Me show in Las Vegas for almost two years, but the costume changes and songs have kept coming.

The 33-year-old singer took to the stage at The Axis in Planet Hollywood on Friday for the show and displayed a wide variety of costume choices.

Wearing everything from bondage-style underwear to angel wings, Britney had plenty of chances to show off her toned abs and curvy figure.

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One more time: Britney Spears showed off her toned abs in multiple costumes during Friday's performance of her Britney: Piece Of Me show in Las Vegas

One more time: Britney Spears showed off her toned abs in multiple costumes during Friday's performance of her Britney: Piece Of Me show in Las Vegas

Set up as a show with seven acts, plus an encore, the costume changes came frequently throughout the night - the mother of two wore at least four different looks.

For some songs, Britney went back to the 1990s and her early success when she tied a plaid shirt around her waist and featured some Crossroads-style backup dancers.

That outfit also featured a midriff-baring, black crop top, tight black shorts, fishnet stockings, and ankle-high black boots.

Regular engagement: Playing at The Axis at Planet Hollywood, Britney's show has been going for almost two years
Regular engagement: Playing at The Axis at Planet Hollywood, Britney's show has been going for almost two years

Regular engagement: Playing at The Axis at Planet Hollywood, Britney's show has been going for almost two years

Throwback: Thanks to a plaid shirt tied around her waist, Britney's fashion in one costume was reminiscent of her beginnings in the 1990s

Throwback: Thanks to a plaid shirt tied around her waist, Britney's fashion in one costume was reminiscent of her beginnings in the 1990s

Long show: With seven acts, Piece Of Me includes multiple costume changes and more than two dozen songs
Long show: With seven acts, Piece Of Me includes multiple costume changes and more than two dozen songs

Long show: With seven acts, Piece Of Me includes multiple costume changes and more than two dozen songs

A much racier outfit revealed even more skin, with Britney appearing in a black-lace bra and matching stockings.

Flanked by black-masked men, Britney kept the tight black shorts for this costume and added thigh-high boots - the overall look suggested a bondage style.

The ultra-sexy look continued in a third costume, a black-mesh body suit that featured shiny leather panels in strategic locations.

Show-off: Britney's midriff-baring crop top and tight shorts revealed a lot of skin while she sang and danced

Show-off: Britney's midriff-baring crop top and tight shorts revealed a lot of skin while she sang and danced

Adult show: Despite the possible references to her teen years, suggestive choreography made it clear that the 33-year-old singer was aiming her show at adults

Adult show: Despite the possible references to her teen years, suggestive choreography made it clear that the 33-year-old singer was aiming her show at adults

Britney's boots got even higher for this look, reaching nearly to the tops of her thighs.

After these costumes, an angel outfit came as a surprise, especially when it featured fluffy wings that had a span greater than Britney's height.

The dress that accompanied those wings was covered in frills and puffed white fabrics, excellent choices for hiding whatever mechanism was used to lift Britney into the air.

On human bondage: At another point in the show, Britney opted for a lacy bra and stockings - the black clothes and her companions' masks hinted at a bondage theme

On human bondage: At another point in the show, Britney opted for a lacy bra and stockings - the black clothes and her companions' masks hinted at a bondage theme

Coming to an end: Having hinted that she might not renew her contract when it ends at the end of the year, Britney might leave Las Vegas after December
Coming to an end: Having hinted that she might not renew her contract when it ends at the end of the year, Britney might leave Las Vegas after December

Coming to an end: Having hinted that she might not renew her contract when it ends at the end of the year, Britney might leave Las Vegas after December

Britney recently revealed that her long-running show might be coming to its end in the next few months.

'I'm not really sure,' Britney said to E! Online when asked about her contract with Planet Hollywood.

'I haven't made up my mind. I really love doing the show. It's a lot, a lot of fun but I'm kind of torn right now. I don't really know what I want to do.'

Back in black: A mesh body suit with strategic leather patches gave Britney some flexibility

Back in black: A mesh body suit with strategic leather patches gave Britney some flexibility

If Britney does not decide to sign on for more shows, Britney: Piece Of Me is expected to end on December 31.

At that point, the singer will have performed 133 concerts since 2013.

The Baby One More Time singer has plenty going on even if she does not renew her Las Vegas contract.

TV return: On August 11, Britney announced that she would guest-star on Jane The Virgin, her first TV role since 2008

TV return: On August 11, Britney announced that she would guest-star on Jane The Virgin, her first TV role since 2008

She has said that work is progressing on her upcoming ninth studio album: 'I'm working with some women who are amazing writers. I have ballads and, of course, dance music.'

In addition to this, Britney will soon be returning to acting for the first time since she guest-starred on How I Met Your Mother in 2008.

Angelic vision: An unusual costume change put Britney in an angel costume, complete with a lifting mechanism and giant wings

Angelic vision: An unusual costume change put Britney in an angel costume, complete with a lifting mechanism and giant wings

Britney tweeted on August 11 that she would be guest-starring on the telenovela comedy, Jane The Virgin, which returns for its second season on October 12.

While her exact role on the Golden Globe-nominated show is unknown, she is expected to play the nemesis of Jane's father, Rogelio (Jaime Camil).

According to ET Online, her character - who appears in the fifth episode - is an exaggerated version of Britney herself and will be bringing some music to the show.

New music: Although no release schedule has been announced, Britney has said she is working on a new album

New music: Although no release schedule has been announced, Britney has said she is working on a new album

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