We know “ageless” was a term co-opted by The Real Housewives of New York City‘s Ramona Singer for her skincare business, but her RHONY co-star, Sonja Morgan, continues to fully embody that sentiment. The 57-year-old posed with her daughter, Quincy, 21, in an Instagram video on Thursday, October 7 to celebrate Quincy’s 21st birthday, and fans pointed out how gorgeous Sonja looked as well!