All and sundry
Definition 1 of 1
Pro Tip 1/3Inclusiveness
Indicates a situation where everyone is welcomed or involved, without exclusions. 
The community picnic is for all and sundry, so feel free to come.
Pro Tip 2/3Informality
Used in casual or informal settings rather than formal or official announcements. 
He used the house as a place for all and sundry to gather.
Pro Tip 3/3Broad Appeal
Often implies that something is popular or well-known to a wide audience. 
Her cooking skills are admired by all and sundry in our town.