Nothing to stop you having the shirt and tie underneath.
Atb
no there aint but it the tie wont stop on long when im digging!!! and the shirt will end up very muddy
Just tuck your tie into your shirt, roll your sleeves up, job done, any other mud well it's just part & parcel of digging holes in the ground lol, better that way than sweating your bollocks off in waterproofs.
Edited to add... Shh surely if you've been invited then who ever asked you will know what's what with that particular hunt??? Really can't see why you had to asked on here, but hey your full of surprises. Lo