The Life of Crime actress looked fresh and fit in the white sleeveless mini-dress and silver Louboutin pumps.
It's been two and a half years since the 45-year-old's fiancé Justin Theroux popped the question with the bauble thought to be an 8-carat radiant cut diamond estimated around $500,000.
According to Us Weekly, the Golden Globe winner and the 43-year-old Leftovers star plan to elope in a tropical setting - either Hawaii or Cabo San Lucas, Mexico.
'She keeps saying to Justin "Let's just elope,"' a source told the mag.
'They want a relaxed beachy vibe. It will be small - their families and close friends. They do not have these entourages they feel they need to invite.'
Coincidentally, Jennifer's good friend Emily Blunt (Into the Woods), whom she's holidayed with in Cabo, interviewed her for the broadcast.
The 31-year-old new mother showcased her midriff as the gal pals posed alongside a towering Laura Dern (Wild).
Soon Englishman Eddie Redmayne - who's earning Oscar buzz for his role in Theory of Everything - joined the trio for a cosy, smiling snap.
Aside from prosthetic scarring on her face, Aniston went absolutely make-up free for her upcoming role in the suicide drama Cake.
'It was so fabulous, and so dreamy and so empowering and liberating,' the Emmy winner said at a Deadline Q&A Saturday.
