Destiny's Child do the Mannequin Challenge as they celebrate Kelly Rowland's son's birthday... amid speculation band is reuniting

There's been speculation they're reuniting after a verified Destiny's Child Instagram account popped up last month.

And on Monday Kelly Rowland added fuel to the fire with a new video post she uploaded featuring none other than her former band-mates Beyoncé and Michelle Williams.

The girls did the Mannequin Challenge together, with Michelle, 36 passing a ball to Beyoncé and Kelly, 35 standing at the ready holding a balloon like a bat.

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Fun and games: Kelly Rowland reunited with her Destiny's Child bandmates on Monday and did the Mannequin Challenge for Instagram

The clip was set to Lauryn Hill’s Every Ghetto, Every City, and the singer's did a great job of keeping perfectly still.

Beyoncé, 35, stood out in a red off-the-shoulder mini dress and her blonde locks tied back.

Michelle kept it casual in all black while Kelly teamed grey jeans with a long-sleeved top. 

Party time: The ladies appeared to have got together for Kelly's son's birthday celebrations over the weekend

Teasing fans! The former bandmates got together just weeks after an official Destiny's Child account appeared on Instagram 

The Mannequin Challenge has been sweeping across the nation in recent weeks and especially popular with teens.

The basic idea is that everyone freezes in place forming a type of sculpture with someone then taking a moving video of it and sometimes adding a soundtrack.

At appeared the trio got together to celebrate Kelly's son's birthday along with Beyoncé's mother Tina. 

Going viral: The Mannequin Challenge has been sweeping across the nation in recent weeks and especially popular with teens

Queen B: Beyoncé, 35, stood out in a red off-the-shoulder mini dress and her blonde locks tied back

On October 21 Destiny's Child officially joined Instagram with fans praying that it means there is a reunion on the cards. 

The account, which is run and controlled by Sony Music Entertainment, has already drummed up over 45k followers. 

The band went their separate ways in 2006 to carve out solo careers but there has been heavy speculation that the trio will come back together next year to mark their 20th anniversary. 

Meanwhile Kelly's son Titan Jewell Witherspoon turned two years old on Friday.

That day the songstress was spotted picking up some colourful balloons for her boy in Los Angeles. 

Kelly married her manager Tim Witherspoon in May of 2014.

Doting mom: Kelly was pictured out on Friday getting some birthday supplies for her son Titan who turned two the same day

Turning two! Beyonce's mother Tina Lawson helped the tot celebrate during the festivities

The pair welcomed their son, Titan Jewell Witherspoon, on November 4, 2014.  

Kelly shut down speculation of a Destiny's Child reunion earlier this week by declaring no conversations have taken place.

She said of the rumours: 'We haven't even talked anything about that. We've just been enjoying each other's company and love and enjoying being women.'

Despite splitting up 10 years ago, the girls have always remained close and supported each other's solo careers.

Kelly explained: 'We just had dinner [with Beyoncé] last night! [People] often look at us sideways, like, "Are we really seeing this?" It's really cute.'

A verified Destiny's Child account popped up on October 21. It is run and controlled by Sony Music Entertainment and has already drummed up over 45k followers

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