Jen is also "going all out" and having Sia sing live at her party.
The publication claims that the former Friends star is showing everyone she's not "wallowing" anymore and "Jen doesn't want anyone to feel sorry for her."
She wants the celebration to be different from last year when she was left depressed and miserable when she and Justin Theroux announced their split.
But after a year according to sources "Jen has never been in a better place personally and professionally."
Jen is also said to be over the moon now she is 'back with Brad'.
"It's something she's secretly always dreamed of," the source spills.