Liv Tyler's Marriage On The Rocks?

Liv Tyler has left question marks hanging over her marriage to British rocker Royston Langdon, after posing at New York's Costume Institute Gala on Monday night without a wedding ring.

The couple married in March 2003, and have a three-year-old son, Milo.

But sources claim the relationship has been on the rocks for some time; rumours seemingly confirmed when Tyler strolled the red carpet alone at the star-studded event, with a clearly naked ring finger - the same night Scarlett Johansson was showing off her brand new engagement ring.

When contacted by the New York Daily News, a representative for 30-year old Tyler refused to comment on the speculation surrounding her marriage.