In New Hampshire more women under the age of 45 backed Bernie Sanders

F ormer Secretary of State appeared to be trying to appeal to young voters

Clinton was in Vegas to campaign ahead of Nevada's Democratic caucus

Britney Spears met with Hillary Clinton in Las Vegas on Thursday and offered a gushing endorsement of the presidential candidate, but then stealthily took it back.

The singer posted a photograph of the pair onto her Instagram account praising the 'incredible' former Secretary of State, ending with the hashtag 'ImWithHer' that appeared to be a clear show of support.

The hashtag is the one used in all social media by Clinton supporters.

However, Spears, 34, then updated the photograph shortly after and mysteriously removed the hashtag, appearing to recant her endorsement for the 68-year-old who is actively trying to appeal to younger voters.

Show of support: Taking to social media to post photos of their meeting, including this one, Britney Spears gushed about meeting Hillary Clinton and used the 'ImWithHer' hashtag that Clinton's supporters use

Change of heart: A short time after posting the picture, Spears removed her endorsement and deleted the hashtag 'ImWithher'

The decision by Spears to give and then take back her support for Hillary's presidential campaign will be a blow for the Democrat who was defeated by rival candidate Bernie Sanders in the recent New Hampshire primary.

Indeed, Sanders has gone from an unlikely presidential proposition to a serious challenger and draws from a huge swell of new support, especially from younger voters.

The 68-year-old former Secretary of State was in the area to campaign ahead of Nevada's Democratic caucus on Saturday, where she met the 'Baby One More Time' singer.

In New Hampshire on February 9, 70 percent of women under the age of 45 and 80 percent under 30 backed Bernie Sanders over Clinton, exit polls showed.

But Spears's pictures may well work in Clinton's favor despite removing the hashtag of support as the 34-year-old singer took to Twitter, Facebook and Instagram to gush about the meeting.

Spears, who was in the area for her Britney: Piece of Me residency show at Planet Hollywood, wrote: 'Being in Vegas for ‪#‎PieceOfMe is amazing for so many reasons...

'Especially today... because I had the incredible opportunity to meet Hillary Clinton!!'

Spears added that Clinton was: 'Such an inspiration and beautiful voice for women around the world!!!'

Praise: The singer called Hillary Clinton an 'inspiration and beautiful voice for women around the world'

Anger: After Britney posted the hashtag that indicated she supported Hillary some took to social media to attack the singer

Supportive: However, others seemed to say that Britney's endorsement had signed and sealed their decision to vote for Hillary

Endorsement: Others simply tweeted their support for Britney after she initially used the 'ImWithHer' hashtag

And concluded: 'This woman had an intense presence and I felt very honored to meet her!!!'

Spears possibly changed her mind after seeing how her fans reacted with disappointment when she endorsed Clinton.

They chided her for not supporting Bernie Sanders, while others said that because of her decision they too would now be voting for Hillary.

One person wrote: 'This is about powerful women. Not politics.

'Both women have strong public profiles and support different causes and have different beliefs.

'It's about strong women succeeding and people hearing them, even if you don't like what they have to say.'

Regardless, the decision to remove the hashtag follows years of speculation that Spears is conservative leaning.

This is based largely on the fact that she grew up in Louisiana and Spears has never publicly stated her political affiliation.

Spears also shared another picture of her meeting with Clinton, with the two appearing to be involved in deep conversation.

Nevada was supposed to be Clinton country due to its diverse population.

But her race with Bernie Sanders is closer than ever - making a win in the state increasingly important.

Close but no cigar: Spears nearly endorsed Clinton's (pictured Thursday) official campaign by including the hashtag #ImWithHer in her photo caption on Instagram. She later edited the post and removed it, however