Meryl Streep is a proud mom. The Hollywood star stepped out with her four kids for a very special evening, putting on a united front on the red carpet of the Academy Museum Gala, following news about her separation from husband Don Gummer.WHY MERYL STREEP AND DON GUMMER DECIDED TO SEPARATE AFTER 45 YEARS OF MARRIAGEMERYL STREEP’S FOUR CHILDREN WITH DON GUMMER, AND THEIR INCREDIBLE RESEMBLANCE WITH THE ACTRESSThe 74-year-old Oscar winner was all smiles posing with her four kids on Sunday night, wearing a black dress with matching black heels.