She could have had a wardrobe malfunction at any moment, which is why Rihanna must have needed pal Katy Perry to have her back - or her front, as it were.
The blue-haired pop star made sure that her longtime pal hadn't popped out of her dress at the 54th Annual Grammy Awards tonight.
It would have been quite easy for the 23-year-old Bajan singer to shimmy out of her slinky black Giorgio Armani gown.
The We Found Love singer wore a slew of Neil Lane jewels, including a diamond and gold snake amulet, a gold cuff, gold and diamond rings as well as gold triangle earrings.
She also wore a strategically placed gold body necklace, as well as sexy Christian Louboutin heels and a matching Jimmy Choo clutch.
The recently divorced Perry must have decided to go for the gold as well with her third costume change of the night.
The 27-year-old wore a glistening gold Gucci gown paired with, of course, some signature Louboutin heels.
Her blue hued hairdo added a pop of typical Katy Perry colour to her otherwise glamorous ensemble.
The best friends clearly thought the other looked absolutely fabulous given the way they gazed at one another for the cameras.
Their performances might have added to their sensual behaviour.