Washington, Nov 10 : Angelina Jolie''s twin babies with Brad Pitt may be just four-months-old, but they are already developing their own personalities.

The actress, who gave birth to twins Knox Leon and Vivienne Marcheline in July (08), is proud that the tots are shining so early.

Jolie and Pitt are, in fact, besotted with the new tots, who are ‘starting to get very smiley.’

"They''re great. They''re still so little, but they do (have their own personalities),” Contactmusic quoted her, as saying.

“They''re at that (stage) where their personality really starts to shine," she added. (ANI)