Peggy and Meghan shared a lovely moment talking to each other with Peggy saying: "Lovely lady, you are, may the good Lord always bless you".
Today marked her first official as patron to the charity, but she has been visiting them privately since autumn past year.
It was a two engagement day for Royal Meghan - tonight she and Prince Harry are at the Cirque du Soleil Totem for a gala benefit in support of Sentebale.
On Monday the Duchess told crowds in Birkenhead that she was six months pregnant and expecting the baby around the end of April or the start of May.
While there, the Duchess met with several women, one of whom attempted to compliment her on her pregnancy by calling the royal a "fat lady".
Veteran Kuchar fires back-to-back 63s to lead Sony Open
Kuchar's final-round 66 put him at 22-under 258 for the tournament, with Putnam finishing at 18 under with a 2-under 68 on Sunday. Lahiri bogeyed the 460-yard par-4 sixth, as he landed on the green in 2 and three-putting, moving him to one-over for the round.
What do you think of Meghan's outfit?
In addition to Mayhew, the Duchess of Sussex is also the patron of Smart Works, a charity that helps women get back on their feet, the National Theatre and the Association of Commonwealth Universities.
Meghan Markle visited animal charity Mayhew today, one of her four official patronages as announced last week to meet with staff, volunteers, and of course spend time with one of the animals. The animal welfare organisation uses public donations to improve the lives of dogs, cats and people who live locally and internationally. Meghan paired the eye-catching dress with black heels and had her hair in a chic updo.
It has a pet refuge service, provides vet services to vulnerable owners and has a team of animal welfare officers who work with local residents helping local communities.