Beyonce spark rumors of second pregnancy on Instagram

Beyonce has sparked rumors of her second pregnancy after she shared a pic on Instagram where she can be seen buried in sand with giant sandy mound covering her stomach.

The 33-year-old singer's stomach appears to be a bump of the baby in the pic, Stuff.co.nz reported.

The American singer, who is married to rapper Jay-Z, had revealed her first pregnancy at the 2011 MTV Video Music Awards.