Bethenny Frankel wore one of her many purple two-pieces this afternoon while on the beach in Miami with her daughter, Bryn. It's Bethenny's latest bikini adventure, after she took Summer surfing lessons and enjoyed her honeymoon with Jason Hoppy nearly a year ago. She and Bryn headed off on a girls-only vacation just a few days ago. Bethenny took time to observe her favorite national holiday, Margarita Day, before sweetly tweeting, "Bryn's cute little bottom in her bathing suit and her sun hat is the cutest, sweetest ever. Having best time!" Bethenny's recharging her batteries ahead of her return to TV in Bethenny Ever After next week, and the debut coincides conveniently with the release of her new book, A Place of Yes: 10 Rules for Getting Everything You Want Out of Life, in March.