All it took was 9/16ths of a second.

In a career spanning several decades, selling more than 100 million records and being the youngest child of the Jackson family, arguably the most unforgettable moment of Janet Jackson's career lasted just 9/16ths of a second.

During her performance at the Super Bowl XXXVIII halftime show, her bare breast was exposed for a minuscule amount of time but it grabbed all the headlines, nonetheless.

Let's hope that that ill fate will not befall her once again, but here is what may be in store for those who watch her set at Glastonbury Festival's Pyramid Stage at 5.45pm on Saturday, June 29. It will be her first appearance at the iconic festival at Worthy Farm.

So what can we expect?

A view of the crowd during Royal Blood's set
Glastonbury Festival is back for 2019

1) No wardrobe malfunctions:

On February 1, 2004, in Houston, Texas, a wardrobe malfunction to end all wardrobe malfunctions took place during the Super Bowl's half time show.

Justin Timberlake and Jackson were performing a duet of his song 'Rock your Body' when the male pop star said: "I'm gonna have you naked by the end of this song."

Timberlake then pulled off part of Jackson's costume, revealing her right breast, which was partially covered by a piece of nipple jewellery. The incident is perhaps remembered as the most unforgettable Super Bowl half-time show moment, unfortunately.

As a result, her career took a major hit, while his carried on just fine.

It would be safe to bet that Jackson will do her utmost to make sure that an accident like that will not happen again when she performs at Glastonbury Festival.

Michael Eavis founded the Glastonbury Festival in 1970
Michael Eavis founded the Glastonbury Festival in 1970

2) A Michael Jackson mention:

The most famous family member of the Jacksons, Michael, has been in the headlines this year for all the wrong reasons.

She is yet to publicly address HBO’s Leaving Neverland, which looks at the allegations that Michael molested Wade Robson and James Safechuck when they were children.

Other members of the family have openly supported the King of Pop.

Although she is not known for being outspoken about her private life, there is a chance she could air her views at one of the biggest performances she has done in years.

3) A kick-ass show:

Much like her brother before her, Janet loves to put on a show when it comes to performing.

Many news outlets have reported that during her world tours, she has earned a reputation as a world-class performer, with enthralling choreography and sets and dozens of hit records.

She boasts 10 no.1s and 27 top 10 hits, has racked up 219 weeks in the top 10 - the latter is more than Michael ever achieved.

Festival-goers are likely to hear Black Cat, Miss you Much, If, Control, Nasty, Together Again and more.

This is also her first festival in the UK, so it promises to be a cracker.

Crowds watch the Foo Fighters on the Pyramid Stage at Glastonbury Festival 2017
Crowds watch the Foo Fighters on the Pyramid Stage at Glastonbury Festival 2017

4) That Glastonbury poster 'promotion':

When the festival organisers tweeted who the headliners for the 2019 event were, the top row read: 'The Killers, The Cure, Stormzy, Kylie, Janet Jackson'.

Here is the original poster that Glastonbury Festival tweeted:

And here is the one posted by Janet Jackson.

In this one, she has been bumped up to the top slot. It is unclear whether the singer's team requested for this version of the poster to be made or whether Glastonbury did it.

It may be unlikely that she did the photoshopping herself, mind.

There may be a little nod towards that during her performance later this month.

5) A political statement?

Moments before Jackson took to the stage in Louisiana back in September 2017 as part of her State of the World tour, made something of a political statement.

A video condemning domestic terrorism, white supremacy and fascism came on the screen.

The short video included naming black men who were killed by police officers and audio clips of people explaining the threats of privilege and inequality.

This came just weeks after the white supremacist rally in Charlottesville, Virginia. Three people died in the rally, which included neo-nazis, white nationalists, Klansmen and more.

As a footnote, when Donald Trump and Hillary Clinton were vying to be President of the United States in October 2016, Trump's remark that his opponent was a 'nasty woman' led to a 250 per cent spike on Spotify for Jackson's 1986 hit 'Nasty'.

So we may see another political statement at Glastonbury this year.

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