Meghan Markle has been captured smiling in a new snap as her pal paid tribute to her, describing her as "incredibly warm and open".The Duchess of Sussex, 42, is gearing up to celebrate Mother's Day with the rest of the USA on Sunday, May 14, and no doubt she will be spending it with her children, Prince Archie, four, and Princess Lilibet, almost two. Prince Harry's wife is currently supporting a group named 'Alliance of Moms' which aims to raise awareness of "expectant and parenting foster youth" in Los Angeles.The group's co-founder Kelly McKee Zajfen, took to its official Instagram page to share a snap with Meghan, as both women sported a 'Community Motherhood' T-shirt with cream knits slung around their shoulders. Meghan looked fresh-faced with minimal makeup, whilst her glossy brown hair tumbled in waves past her shoulders.