Kyle Richards is spilling the secrets behind her "RHOBH" glam. Bravo Over her 15 years on reality TV, Kyle Richards has mastered the art of a great reunion look. So after filming the drama-filled finale of “Real Housewives of Beverly Hills” Season 15, the Bravo OG took to Amazon Live to share her beauty secrets, from natural-looking lashes to her hack for a glossy, slicked-back bun. And just as she sourced her own sequined L’Agence dress for the big taping, the millionaire star is no stranger to ordering her glam go-tos on Amazon. Below, shop highlights from her look — including a $9 mascara she swears is the best around. Dime TBT Cream Dime The reality TV icon proved her love for this retinol alternative, holding up a nearly empty jar during the livestream (and assuring viewers she’d already ordered more). “I have been using it religiously,” she said.…