Formula One's Charles Leclerc proposed to Alexandra Saint Mleux with a stunning diamond ring. Leclerc, 28, and Saint Mleux, 24, announced their engagement via Instagram on Sunday, November 2. In the photos, the duo gave their dog Leo a kiss while Saint Mleux showed off her oval engagement ring. According to Neil Dutta, the managing director at Angelic Diamonds, her ring is "estimated at five to six carats." "Alexandra's engagement ring is a refined take on a classic design," Dutta shared with Us Weekly in a press release statement.