Beyonce is rumored to be expecting her second child Reuters/Brendan McDermid

Their daughter Blue Ivy just turned four and it looks like Beyonce and her rapper husband Jay Z could soon be gifting their firstborn with a sibling. The Single Ladies songstress has ignited rumours that she is pregnant with the couple's second child after being spotted hiding her curves in an oversized jacket.

The 34-year-old was pictured in an green army jacket on 10 January as she enjoyed a night out in West Hollywood with her other half. After the images began circulating online, fans couldn't help but point out that not only was her face fuller but she has been MIA recently. Earlier in the day, the power couple were spotted at their daughter's birthday celebrations, where Queen B concealed her curves once again with a baggy grey emblazoned Kenzo jumper.

The first time the diva was pregnant she managed to keep it a secret until the 2011 MTV VMA Awards when she revealed her burgeoning bump at the end of her performance of Love On Top. She welcomed her daughter on 7 January 2012 at New York's Lenox Hill Hospital under heavy security.

The mother-of-one previously opened up about her desire to have a big family telling Vogue US: "When I was younger there were moments where I said, 'I'm not going to have children' and then moments when I wanted four. And now I definitely want another, but I don't know when."

Back in August 2015 pregnancy rumours were rife after she was snapped with a MacBook strategically placed over her stomach on two separate occasions. Considering it's been seven weeks since she last posted a snap on Instagram, it's safe to say that anything is possible.

Meanwhile, the former Destiny's Child star is preparing to make a return to the Superbowl as she will be joining Coldplay on stage during their half-time set for the 50th anniversary show. She previously headlined her own half-time show in 2013, where she was joined by former band members Kelly Rowland and Michelle Williams. Although the British group with be top the bill, fans can also expect Bruno Mars to grace the stage.