Alexa Chung is to appear in 'Gossip Girl'.

The 28-year-old British presenter was seen on set in New York City yesterday (01.08.12) sporting full hair and make-up and wearing a blue and red dress for filming.

However, it is unclear whether Alexa - who moved to the US in 2009 - is making a cameo role as herself or making her acting debut as no character details have been released at present.

It is yet to be confirmed how many episodes the former model will appear in.

'Gossip Girl' launched in 2007 and it was recently revealed the forthcoming sixth season will be the last for the drama.

Though most of the storyline details have been kept under wraps, it has been disclosed that

Serena Van der Woodsen - played by Blake Lively - is to have an eventful series.

A spokesperson said: ''Serena has gone off the grid, beyond even the reach of 'Gossip Girl'.

''Her friends fear for the worst and hope for the best, but even they can't imagine where they will ultimately find her.''

Alexa follows in the footsteps of Elizabeth Hurley, who appeared in the fifth series of the show.