Florence Eiseman children's clothing tends to run a bit small. This is especially true of swimwear. It is recommended that you size up 1-2 sizes in swimwear, especially in girl's one piece swimsuits.

Size	Height (in.)	Weight (lbs.)	Chest (in.)	Waist (in.)	Seat (in.)	Vert. Trunk (in.)
3M	Up to 23	6-9	15.5	17.75	16.25	28
6M	23.5-25	9-12	16.25	18 1/8	17	29
9M	25.5-27	12-15	17	18 1/2	17.75	30
12M	27.5-29	15-18	17.75	18 7/8	18.5	31
18M	29.5-31	18-21	18.5	19.25	19.25	32
24M	31.5-33	21-24	19.25	19 5/8	20	33
2T	33-35.5	25-28	20	20	21	33
3T	36-38.5	29-32	21	20.5	22	35.5
4T	39-41	33-35	22	21	23	38
4	39-41.5	33-36	22	21	23	38
5	42-44.5	37-40	23	21.5	24	40.5
6	45-47.5	41-46	24	22	25	43
6X	48-50	47-53	25	22.5	26.5	45.5
7	48-50	47-53	25	22.5	26.5	45.5
8	50.5-52.5	54-63	26.5	23	28	47.5
10	53-55	64-74	28	24	30	50
12	55.5-57.5	75-84	29.5	25	32	52.5
14	58-60	85-94	31	26	34	54.5