Brand vs brand

Cat & Jack vs babyGap sizes

Of Cat & Jack's 11 baby and toddler sizes, 0 line up closely with a babyGap size, 10 are partial matches, and 1 has no clean match. Both charts list weight and height, so the comparison uses both.

Watch the labels: Cat & Jack 0-3M is closer to babyGap 0-3M than to babyGap's own 0-3M; Cat & Jack 3-6M is closer to babyGap 3-6M than to babyGap's own 3-6M; Cat & Jack 2T is closer to babyGap 2Y than to babyGap's own 2T.

Cat & Jack True to sizebabyGap True to size

Based on published size charts compared with other brands.

Size by size, on one scale

Each block is one size, placed where the brand's chart puts it. Blocks that sit above each other fit the same baby.

Weight (lb)

Cat & Jack

Preemie: up to 5.5 lb
Newborn: 6 to 8 lb
0-3M: 9 to 12 lb
3-6M: 12.5 to 16 lb
6-9M: 16.5 to 19.5 lb
12M: 20 to 23 lb
18M: 23.5 to 26 lb
24M: 26.5 to 28 lb
2T: 26.5 to 28 lb
3T: 28.5 to 32 lb
4T: 32.5 to 37 lb

babyGap

Up to 7 lb: up to 6.6 lb
0-3M: 6.6 to 11 lb
3-6M: 11 to 17.6 lb
6-12M: 17.6 to 22 lb
12-18M: 22 to 26.5 lb
18-24M: 26.5 to 30.9 lb
2Y: 30.9 to 33.1 lb
3Y: 33.1 to 35.3 lb
4Y: 35.3 to 39.7 lb

Height (in)

Cat & Jack

Preemie: up to 17.5 in
Newborn: 18 to 20 in
0-3M: 20.5 to 23.5 in
3-6M: 24 to 25.5 in
6-9M: 26 to 27.5 in
12M: 28 to 30.5 in
18M: 31 to 32.5 in
24M: 33 to 35.5 in
2T: 33 to 35.5 in
3T: 36 to 38.5 in
4T: 39 to 43 in

babyGap

Up to 7 lb: up to 18.1 in
0-3M: 18.1 to 22.8 in
3-6M: 22.8 to 27.2 in
6-12M: 27.2 to 29.1 in
12-18M: 29.1 to 31.1 in
18-24M: 31.1 to 33.1 in
2Y: 33.1 to 35.8 in
3Y: 35.8 to 39 in
4Y: 39 to 42.1 in

Cat & Jack size to babyGap size

Cat & Jack	Closest babyGap	Match	Weight: Cat & Jack / babyGap	Height: Cat & Jack / babyGap
Preemie	Up to 7 lb	Partial	up to 5.5 lb / up to 6.6 lb	up to 17.5 in / up to 18.1 in
Newborn	0-3M	Partial	6 to 8 lb / 6.6 to 11 lb	18 to 20 in / 18.1 to 22.8 in
0-3M	0-3M	Partial	9 to 12 lb / 6.6 to 11 lb	20.5 to 23.5 in / 18.1 to 22.8 in
3-6M	3-6M	Partial	12.5 to 16 lb / 11 to 17.6 lb	24 to 25.5 in / 22.8 to 27.2 in
6-9M	6-12M	No clean match	16.5 to 19.5 lb / 17.6 to 22 lb	26 to 27.5 in / 27.2 to 29.1 in
12M	6-12M	Partial	20 to 23 lb / 17.6 to 22 lb	28 to 30.5 in / 27.2 to 29.1 in
18M	18-24M	Partial	23.5 to 26 lb / 26.5 to 30.9 lb	31 to 32.5 in / 31.1 to 33.1 in
24M	2Y	Partial	26.5 to 28 lb / 30.9 to 33.1 lb	33 to 35.5 in / 33.1 to 35.8 in
2T	2Y	Partial	26.5 to 28 lb / 30.9 to 33.1 lb	33 to 35.5 in / 33.1 to 35.8 in
3T	3Y	Partial	28.5 to 32 lb / 33.1 to 35.3 lb	36 to 38.5 in / 35.8 to 39 in
4T	4Y	Partial	32.5 to 37 lb / 35.3 to 39.7 lb	39 to 43 in / 39 to 42.1 in

babyGap size to Cat & Jack size

babyGap	Closest Cat & Jack	Match	Weight: babyGap / Cat & Jack	Height: babyGap / Cat & Jack
Up to 7 lb	Preemie	Partial	up to 6.6 lb / up to 5.5 lb	up to 18.1 in / up to 17.5 in
0-3M	0-3M	Partial	6.6 to 11 lb / 9 to 12 lb	18.1 to 22.8 in / 20.5 to 23.5 in
3-6M	3-6M	Partial	11 to 17.6 lb / 12.5 to 16 lb	22.8 to 27.2 in / 24 to 25.5 in
6-12M	12M	Partial	17.6 to 22 lb / 20 to 23 lb	27.2 to 29.1 in / 28 to 30.5 in
12-18M	18M	Partial	22 to 26.5 lb / 23.5 to 26 lb	29.1 to 31.1 in / 31 to 32.5 in
18-24M	18M	Partial	26.5 to 30.9 lb / 23.5 to 26 lb	31.1 to 33.1 in / 31 to 32.5 in
2Y	24M	Partial	30.9 to 33.1 lb / 26.5 to 28 lb	33.1 to 35.8 in / 33 to 35.5 in
3Y	3T	Partial	33.1 to 35.3 lb / 28.5 to 32 lb	35.8 to 39 in / 36 to 38.5 in
4Y	4T	Partial	35.3 to 39.7 lb / 32.5 to 37 lb	39 to 42.1 in / 39 to 43 in

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Every Cat & Jack size in babyGap

Partial match

Cat & Jack Preemie is closest to babyGap Up to 7 lb, but it is not a clean match.

Weight (lb)

Cat & Jack Preemie up to 5.5 lb

babyGap Up to 7 lb up to 6.6 lb

Height (in)

Cat & Jack Preemie up to 17.5 in

babyGap Up to 7 lb up to 18.1 in

The shaded column is the Cat & Jack range. Bars show what each brand publishes for the size.

Based on published size charts. Cat & Jack chart and babyGap chart.

More comparisons

Charts retrieved October 4, 2026 (Cat & Jack) and October 4, 2026 (babyGap). Sources are listed on each brand page. This site is not affiliated with either brand.