Our favourite Gossip Girl star, Leighton Meester, was sporting two very different outfits for her performance in Chicago. Are her outfits a trend or absolutely tragic?

When Leighton arrived at the venue, The Underground, she was pictured wearing a very see through lace top:

Leighton looks happy in her lace top.

She teamed the top with a black crop top and baggy grey trousers, giving the outfit a smart look. With her hair swept back into an up-do, Leighton makes the outfit look classy. What do you think of her top?

Later, Leighton changed into her performance outfit - a very big change to her previous garb:

Leighton goes casual on stage.

Wow, the star has definitely changed from her arrival outfit. This outfit is very casual - baggy top and trousers in dull colours. Do you think Leighton's laid-back look is trend or tragic?

We still think Leighton looks amazing no matter what she wears! Comments please!