Re-watch: The Vamps webchat
The Vamps will be joining Marvin live in the studio on Sunday's Vodafone Big Top 40.
James, Tristan, Bradley and Connor release their second single 'Wild Heart' on Sunday and Marvin will be letting them know first how it gets on in our chart.
While they're here Kat will be sitting them down in front of our studio cameras where the boys will answer your questions in a live webchat.
It all kicks off from 4pm this Sunday but you can get your questions in early, either add them in the comments below or tweet @bigtop40 using the hashtag #TheVampsBT40.
If you missed the webchat, you can watch it back in full below...