McDonald’s of Southern California is celebrating moms this Día de las Madres, May 10, with live mariachi music and a flower for moms at select locations. Find participating locations at mcdsocalcelebrates.com. Additionally, participating McDonald’s restaurants will offer a $15 Breakfast Bundle on May 10 and 11, available exclusively through the McDonald’s app. The bundle includes a Deluxe Breakfast, three hotcakes, two hash browns, and two Sausage Egg McMuffins.