Reese Witherspoon made it a family affair on Saturday, March 9 when she headed out to a birthday party in Brentwood, Calif. with mom Mary, daughter Ava and baby son Tennessee in tow.
The This Means War actress kept things casual with a bright magenta sweater, jeans and leopard-print flats, while her lookalike daughter Ava, 13, opted for a breezy patterned white dress and jean jacket ensemble.
Her younger brother Tennessee, 5 months, looked dapper in a tiny purple-and-green plaid shirt and white baby bonnet.
Witherspoon, 36, welcomed Tennessee to her growing brood on Sept. 27, her first child with husband Jim Toth (the actress is also mother to son Deacon, 8, with ex-husband Ryan Phillippe, who skipped the party).
The Oscar winner and CAA agent Toth, 41, tied the knot back in March 2011.