India, Nov. 6 -- It's not even a month to her Instagram debut, but 'Friends' alum Jennifer Aniston sure knows how to cheer up her online fans!

While the 50-year-old is on the globe tour for her Apple TV+ show 'The Morning Show', she took out time to post a picture of her in an appealing and elegant floor touching black gown.

Aniston accessorised the plunging open-back gown with a simple black clutch, as is seen in the image captured from behind.

"Jen in Black," Aniston captioned with a cheeky play on the Will Smith-starrer 'Men in Black'.

Last month, Aniston officially joined the Instagram world by sharing a 'Friends' reunion selfie with costars Lisa Kudrow, Courteney Cox, Matt LeBlanc, David Schwimmer and Matthew Perry.

The picture ...