Portman's son Aleph keeps watch during a stroll through L.A. Plus: Tina Fey, Heidi Klum & Tim Gunn, Jennifer Love Hewitt, Ryan Kwanten and more

HAIR SHE IS!

Even in an understated costume and wig, Lady Gaga – who's set to perform at Sunday's MTV Video Music Awards – maintains an edgy style as she heads to an N.Y.C. studio on Wednesday.