Long-time couple Brad, 50, and Angelina, 39, married in secret at their French chateau on Saturday, 23 August, surrounded by just immediate family.
According to Daily Star, actress Jennifer had a £400 bouquet of flowers delivered to Brad and Ange's home in France along with a note signed by herself and fiancé Justin Theroux.
A source said Jen felt it would be a "nice gesture" and "spent ages" deciding what to write in the card.
Brad and Jen were once Hollywood's golden couple, married between 2000 and 2005. Then, after they split, Brad began dating Angelina.
Now, Brad and Angelina have been together nine years and have six children: Maddox, 13, Pax, 10, Zahara, nine, Shiloh, eight and Knox and Vivienne, both six.
Jennifer, meanwhile, has been engaged to actor Justin Theroux since 2012.
Brad and Angelina married at their Chateau Miraval in a simple, non-demoninational ceremony performed by a California judge. Their six children were heavily involved in the ceremony and even created artwork that was then sewn onto Angelina's veil.
While Brangelina have been enjoying newlywed bliss - and starting work on a new movie project together - Jennifer has been on the promo circuit for her new film, Life of Crime, which is about two criminals who kidnap the wife of a wealthy man for ransom, only to find he's not that fussed at getting her back...
Watch the Life of Crime trailer:
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!