Solange Knowles' Powdery Eyebrows

Beyonce Knowles' sister Solange may have arrived for an appearance on MTV's TRL with a cast on her foot – but all eyes were on her bizarre powered eyebrows.

As she posed for photos outside the TRL studios in NYC, there was no ignoring her dusty white brows.

Was it the result of some very badly applied make-up? Or does she have a particularly sweaty forehead that needs a regular dusting down with talc? Or perhaps she was trying to outdo her sister's glue-on hair. It's hard to tell.

In other Solange news, the singer revealed that her broken toe was giving her a fashion headache.

The singer checked in with her doctor before donning her designer shoes, insisting she didn't want to appear on U.S. TV wearing a "moonboot".

Knowles, whose toe was broken by stage equipment before a show, says, "My doctor... told me that if I wear really high heels that it takes the pressure off the toe and puts it on the bottom of my feet.

"Usually I wear, like, this moonboot and it's just really ugly, it's bad."