The 35-year-old star posed in the middle of a residential street in Beverly Hills, California, for a photoshoot, reported People magazine.
Clad in a strapless beaded floral dress, Portman looked gorgeous with her hair open.
She welcomed her second child on February 22. Portman and the Millepied, 39, are also parents to a boy, Aleph.
The couple tied the knot in 2012 in Big Sur, California.