Mother's Day 2027
Mother's Day size for a baby born in May
A baby born in May 2026 will be about 12 months old on Mother's Day, May 9, 2027.
- Carter's12M
- Old Navy12-18M
- Cat & Jack12M
- babyGap12-18M
Typical size that day: about 20.4 lb and 29.4 in.That's spring. Think light layers that work for cool mornings and warm afternoons.
Worked out for a birth date in the middle of May, a baby in the middle of the WHO growth chart, and room to grow. A birthday early or late in the month, or a baby who is longer or lighter than average, can land a size apart. The calculator below uses the exact date and your measurements. Last updated October 10, 2026.
Born May 2026: 12 months old on Mother's Day
Typical size: about 20.4 lb, 29.4 in long.
- Carter'sConfident match12M
- Old Navycould be 6-12M12-18M
- Cat & JackConfident match12M
- babyGapcould be 6-12M12-18M
- OshKosh B'goshConfident match12M
- Gerber ChildrenswearConfident match12M
- The Children's Placecould be 6-9M9-12M
- Wonder Nationcould be 18M12M
- Cloud IslandConfident match12M
- Little SleepiesConfident match6-12M
- Kyte Babycould be 6-12M12-18M
- Hanna AnderssonConfident match75 cm
- Burt's Bees BabyConfident match12M
- Nikecould be 9M12M
- Primarycould be 9-12M12-18M
- Posh Peanutcould be 6-12M9-12M
- Janie and Jackcould be 6-12M12-18M
- GymboreeBelow the smallest verified sizeunder 12-18M
- Mini Bodencould be 6-9M9-12M
- Tea CollectionConfident match9-12M
- Magnetic MeConfident match9-12M
- Monica + AndyConfident match9-12M
- Kate Quinncould be 12-18M6-12M
- Bellabu Bearcould be 9-12M12-18M
- Angel DearConfident match6-12M
- Kickee Pantscould be 9-12M12-18M
- L'ovedbabyConfident match9-12M
- Pehrcould be 6-12M12-18M
Born May 2025: 2 years old on Mother's Day
Typical size: about 26 lb, 34.2 in long.
- Carter'scould be 24M2T
- Old Navycould be 18-24M2T
- Cat & JackConfident match2T
- babyGapConfident match2Y
- OshKosh B'goshcould be 24M2T
- Gerber Childrenswearcould be 24M/2T3T
- The Children's PlaceConfident match2T
- Wonder NationConfident match3T
- Cloud IslandConfident match24M
- Little SleepiesConfident match2T
- Kyte BabyConfident match2T
- Hanna Anderssoncould be 85 cm90 cm
- Burt's Bees Babycould be 24M2T
- Nikecould be 18M or 24M2T
- PrimaryConfident match2
- Posh Peanutcould be 18-24M2T
- Janie and JackConfident match2T
- GymboreeConfident match2T
- Mini Boden2Y, could be 12-18M18-24M, 2Y
- Tea CollectionConfident match2T
- Magnetic Mecould be 18-24M2T
- Monica + AndyPast the largest listed size18-24M+
- Kate QuinnConfident match18-24M
- Bellabu BearConfident match2/3T
- Angel DearConfident match2T
- Kickee PantsConfident match2T
- L'ovedbabycould be 12-18M18-24M
- Pehrcould be 18-24M2T
Born May 2024: 3 years old on Mother's Day
Typical size: about 31 lb, 37.6 in tall.
- Carter'sConfident match3T
- Old NavyConfident match3T
- Cat & Jackcould be 4T3T
- babyGapConfident match3Y
- OshKosh B'goshConfident match3T
- Gerber Childrenswearcould be 4T3T
- The Children's Placecould be 4T3T
- Wonder Nationcould be 3T4T
- Cloud IslandPast the largest listed size24M+
- Little SleepiesConfident match3T
- Kyte Babycould be 3T4T
- Hanna Anderssoncould be 100 cm90 cm
- Burt's Bees BabyConfident match3T
- NikeConfident match3T
- Primarycould be 43
- Posh PeanutConfident match3T
- Janie and JackConfident match3
- Gymboreecould be 4T3T
- Mini Boden3Y2-3Y, 3Y
- Tea Collectioncould be 4T3T
- Magnetic Mecould be 3T4T
- Monica + AndyPast the largest listed size18-24M+
- Kate Quinncould be 2T3T
- Bellabu Bearcould be 3T4T
- Angel Dearcould be 4T3T
- Kickee Pantscould be 3T4T
- L'ovedbabyPast the largest listed size18-24M+
- Pehrcould be 2T3T
Born May 2023: 4 years old on Mother's Day
Typical size: about 35.7 lb, 40.5 in tall.
- Carter'sConfident match4T
- Old NavyPast the largest listed size4T+
- Cat & JackConfident match4T
- babyGapConfident match4Y
- OshKosh B'goshConfident match4T
- Gerber ChildrenswearPast the largest listed size4T+
- The Children's PlaceConfident match4T
- Wonder NationConfident match4T
- Cloud IslandPast the largest listed size24M+
- Little SleepiesConfident match4T
- Kyte BabyPast the largest listed size4T+
- Hanna AnderssonConfident match100 cm
- Burt's Bees BabyConfident match4T
- NikeConfident match4T
- PrimaryConfident match4
- Posh PeanutConfident match4T
- Janie and JackConfident match4
- GymboreeConfident match4T
- Mini Boden4Y3-4Y, 4Y
- Tea CollectionConfident match4T
- Magnetic MePast the largest listed size4T+
- Monica + AndyPast the largest listed size18-24M+
- Kate QuinnConfident match4T
- Bellabu BearPast the largest listed size4T+
- Angel DearConfident match4T
- Kickee PantsPast the largest listed size4T+
- L'ovedbabyPast the largest listed size18-24M+
- PehrConfident match4T
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