Most pregnant women find out their baby's sex (if they choose to know) during their mid-pregnancy ultrasound, usually between 16 and 20 weeks. However, the technician may not be able to tell for sure if she can't get a clear view of the baby's genitals.
King Beds. Traditional king-size beds measure 76 inches wide by 80 inches long. California king-size beds measure 72 inches wide by 84 inches long. Sharing a king-size bed with another person affords one the same room as sleeping alone in a twin-size bed. Shop King Size Beds.
Twin sized mattresses are typically 38 to 39 inches in width. For headboard design, it's typical to add at least 6 inches to the width, making it 44 or 45 inches; the extra 3 inches on each side gives the mattress a bit of wiggle room to move. Headboard height is subjective, but typical height is about 24 inches above the top of the mattress. If your mattress is of typical height, the overall height of the headboard from the floor to the top should be at least 36 inches. Add another 6 to 12 inches to the height if desired for aesthetics.