New Delhi, June 4 -- Meghan Markle offered a rare and intimate glimpse into her family life on Tuesday as she celebrated the fourth birthday of her daughter, Princess Lilibet, with two never-before-seen photographs.

"Happy birthday to our beautiful girl!" Meghan wrote in the post. "Four years ago today she came into our lives - and each day is brighter and better because of it."

The Duchess of Sussex also expressed gratitude for the outpouring of affection from well-wishers: "Thanks to all of those sending love and celebrating her special day!"

The first photo shows Meghan and Lilibet lying back on a boat, with their hair blowing gently in the wind - a serene and joyful moment between mother and daughter.

The second image, a throwback...