Gossip Girl fans hail Leighton Meester's 'HBO era' as she announces surprise new role
![Gossip Girl fans hail Leighton Meester's 'HBO era' as she announces surprise new role](https://i2-prod.mirror.co.uk/tv/tv-news/article33303408.ece/ALTERNATES/s615/0_leighton-meester.jpg)
Leighton Meester has been announced as a guest star in a pilot for a brand new comedy series, much to the delight of her loyal fanbase, who took to social media to express their excitement