Dear Paul:
We are going to have a party to celebrate Tom's birthday next Saturday,on 1st,December.And several good frieds are invited to the party.Here,you are honored to attend the party.
The party will start at 8:00PM.We are going to dance till the mid-night.And then,we will cut the birthday cake.
Here,specially invite yoiu to attend the party.We are looking forward to your coming.
Yours,XXX