When Three Become Four!: How to tell a rear facing car seat has been outgrown by height

Liam's Growth!

• 18 Months: W 24 lb 6.5 oz, H 32 in; HC 18.5 in
• 15 Months (66 Weeks): W 22lb 10 oz; H 31.75 in; HC 18.25 in
• 12 Months (55 Weeks): W 22 lb; H 30.25 in; HC 18.5 in
• 12 Months (52 Weeks): W 22 lb 4 oz; H 29.5 in; HC 17.5 in?
• 9 Months (39 Weeks): W 20 lb 8 oz; H 28.75 in; HC 17.75
• Almost 7 months (29 Weeks): W 18 lb 8 oz; L 28 in; HC 17.25 in
• 6 Months (26 Weeks): W 18 lb, 2 oz; L 28 in; HC 17 in
• Almost 5 Months (21 Weeks): W 16 lb, 10 oz; L 26.5 in; HC 17 in
• 4 Months (18 Weeks): W 16 lb, L 25.75 in, HC 16.5 in
• Almost 3 Months (12 weeks): W 13 lb, 15 oz; L 25 in; Head Circ. 16 in
• 2 Months (9 weeks): W 12lb, 10 oz; L 24.5 in; Head Circ. 15.75 in
• 1 Month (4 weeks): W 9lb, 13.5 oz; L 21 5/8 in; Head Circ. 14.75 in
• 10 days: W 8 lb, 1 oz
• 3 Days: W 7 lb, 5 oz
• Birth: Weight 7 lb, 8 oz; Length 20.5 in