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Sunday Siblings is designed on the Mornington Peninsula, Victoria, by three mamas setting out to make cool, fun and comfortable clothing for our little loves. Sunday Siblings is creating high quality, durable and stylish pieces with the intention to be passed down to other babes. Whether that is to siblings or to friends.

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17 products

A pair of SUNDAY SIBLINGS Sunday Siblings - Holiday Pants Red Hearts in ultra-soft beige with red heart patterns hangs on a wall, surrounded by paper sheets painted with red stars for a playful, artistic touch.A young child with blonde braided hair stands barefoot indoors, wearing an ultra-soft white tee and SUNDAY SIBLINGS Sunday Siblings - Holiday Pants Red Hearts—cream pajama pants printed with red hearts. Art supplies and cozy decor are nearby.
SUNDAY SIBLINGS
Sunday Siblings - Holiday Pants Red Hearts Sale price$54.00
Sunday Siblings - Figo Beanie RedSunday Siblings - Figo Beanie Red
SUNDAY SIBLINGS
Sunday Siblings - Figo Beanie Red Sale price$32.00
Sold outSunday Siblings - Figo Beanie BlueSunday Siblings - Figo Beanie Blue
SUNDAY SIBLINGS
Sunday Siblings - Figo Beanie Blue Sale price$32.00
A young child with blue eyes, wearing a cream knit hat, cream shirt, white pants with red fruit prints, and the SUNDAY SIBLINGS Sunday Siblings - Nonno Vest Pink & Orange Check, sits before a colorful wall accented with bright orange.A young child in a cream beanie, white shirt, and pants with red tomato prints sits on a red cabinet. They wear the SUNDAY SIBLINGS Sunday Siblings - Nonno Vest Pink & Orange Check. The pink background is colorful with playful, artistic designs.
SUNDAY SIBLINGS
Sunday Siblings - Nonno Vest Pink & Orange Check Sale price$58.00
The SUNDAY SIBLINGS Sunday Blanket in butter yellow cotton, featuring stripes, is draped over a white speckled chair with rounded legs, beside a matching chair against a white wall and beige floor.A baby with a knitted bear hat lies on a couch, wrapped in the butter yellow Sunday Siblings - Sunday Blanket by SUNDAY SIBLINGS, hands near their mouth and wearing a curious expression.
SUNDAY SIBLINGS
Sunday Siblings - Sunday Blanket Sale price$89.00
Two young children stand indoors. One wears SUNDAY SIBLINGS' Sunday Siblings - Holiday Pants Blue/Mustard Stars, white sneakers, and a pink cat shirt. The other wears a purple checkered sweater with beige star-print pants. A white speckled chair is nearby.A young child with curly blonde hair wears a light pink "Lucky Cat" t-shirt and SUNDAY SIBLINGS Sunday Siblings - Holiday Pants Blue/Mustard Stars with an elastic waistband, smiling against a white wall beside a speckled chair.
SUNDAY SIBLINGS
Sunday Siblings - Holiday Pants Blue/Mustard Stars Sale price$54.00
A young girl with long blonde hair sits on a white speckled chair, wearing a pink Lucky Cat T-shirt, white sneakers, and SUNDAY SIBLINGS Sunday Siblings - Holiday Pants Purple Hearts. She makes a peace sign and smiles slightly.A young girl in a light pink top and SUNDAY SIBLINGS Sunday Siblings - Holiday Pants Purple Hearts sits on a pastel-speckled white stool, white sneakers on, near a speckled table in a minimalist room.
SUNDAY SIBLINGS
Sunday Siblings - Holiday Pants Purple Hearts Sale price$54.00
A young child wearing the SUNDAY SIBLINGS Fruit Loop Sweater Pink—an oversized light pink french terry cotton sweatshirt with a tomato and heart graphic—stands smiling by a red chair, surrounded by red and pink decorations and drawers.A young child in the SUNDAY SIBLINGS Sunday Siblings - Fruit Loop Sweater Pink, featuring a heart and tomato design, pairs it with cream tomato-print pants and a pink beanie, standing by a red stool against Jackie Green’s colorful backdrop with red cabinets.
SUNDAY SIBLINGS
Sunday Siblings - Fruit Loop Sweater Pink Sale price$68.00
A young child wears the SUNDAY SIBLINGS Fruit Loop Sweater Grey Marle, an oversized French terry cotton sweatshirt with an orange fruit print, standing on a colorful rug in an art studio with vibrant artwork and red drawers behind.A young child with wavy blond hair wears an orange knit beanie and the SUNDAY SIBLINGS Fruit Loop Sweater Grey Marle, which features a tomato with a heart. The child stands indoors against a colorful, pink-themed background.
SUNDAY SIBLINGS
Sunday Siblings - Fruit Loop Sweater Grey Marle Sale price$68.00
Sold outA young child smiles with arms outstretched, wearing the PRE-ORDER Sunday Siblings - Sunday Knit Blue jumper by SUNDAY SIBLINGS, made from 100% cotton, paired with white pants with red polka dots in a bright minimalist room.A young child in a SUNDAY SIBLINGS Sunday Knit Blue jumper, cream pants with red dots, and green shoes walks indoors on a light floor.
SUNDAY SIBLINGS
Sunday Siblings - Sunday Knit Blue - Size 3-4 Sale price$68.00
A young child in a white beanie, gray shirt, and SUNDAY SIBLINGS Sunday Siblings - Ninch Overalls Happy Tomato stands sideways by a red desk with art supplies and colorful art in a playful, creative studio.A young child in a white beanie, gray sweatshirt, SUNDAY SIBLINGS Sunday Siblings - Ninch Overalls Happy Tomato (100% cotton), and red sneakers stands on a colorful rug in a brightly decorated room.
SUNDAY SIBLINGS
Sunday Siblings - Ninch Overalls Happy Tomato - Size NB-1Y Sale price$72.00
A toddler models the PRE-ORDER Sunday Siblings - Art Club Knit sweater by SUNDAY SIBLINGS, paired with a cream knit beanie, red sneakers, and patterned white pants, standing indoors against a pastel painted backdrop.A young child stands indoors in the SUNDAY SIBLINGS Sunday Siblings - Art Club Knit sweater, white pants with red fruit prints, and red shoes, surrounded by abstract pastel artworks.
SUNDAY SIBLINGS
Sunday Siblings - Art Club Knit Sale price$68.00
A young child with tied-up hair stands on a tree stump outdoors, wearing the Sunday Siblings - Catch'n Bunnies Tee Yellow by SUNDAY SIBLINGS and blue star-patterned pants, surrounded by green plants and trees.A child stands outdoors holding a green fruit, wearing the SUNDAY SIBLINGS Catch'n Bunnies Tee in yellow and beige pants with blue stars. They pair this with white sneakers amidst grass, flowers, and a circular planter.
SUNDAY SIBLINGS
Sunday Siblings - Catch'n Bunnies Tee Yellow Sale price$35.00 Regular price$49.00
A young child with curly hair stands in a garden, wearing an oversized 100% cotton Sunday Siblings - Catch'n Bunnies Tee in pink. The beige T-shirt is adorned with playful illustrations and paired with pink pants and a beaded bracelet, surrounded by lush green plants.A young curly-haired blonde child stands on grass, holding a peach. They wear a SUNDAY SIBLINGS Catch'n Bunnies Tee in pink, bright pink pants, brown shoes, and a colorful bracelet. Flowers add vibrancy to the background.
SUNDAY SIBLINGS
Sunday Siblings - Catch'n Bunnies Tee Pink Sale price$35.00 Regular price$49.00
A pair of Sunday Siblings Kiddo Shorts in cream with pink stars is taped to a white paneled wall with blue tape. Made from soft French terry cotton, these children's shorts feature an elastic waistband.A curly-haired child in a purple shirt and SUNDAY SIBLINGS' Sunday Siblings ~ Kiddo Shorts Purple walks a curved path. Nearby, another child in a blue shirt wears similar French terry cotton shorts. The serene backdrop includes trees and people sitting.
SUNDAY SIBLINGS
Sunday Siblings - Kiddo Shorts Purple Sale price$35.00 Regular price$49.00
Sunday Siblings Kiddo Shorts Blue, made from cream french terry cotton with playful blue star patterns, feature an elastic waistband for comfort. Displayed on a white panel wall with blue clips, these stylish shorts ensure a trendy look.A young, blonde-haired child sits on a white picnic bench, enjoying a lollipop. They're wearing a blue shirt with a design and stylish Sunday Siblings Kiddo Shorts Blue made from French terry cotton, featuring an elastic waistband. A small disco ball nearby adds to the relaxed outdoor vibe.
SUNDAY SIBLINGS
Sunday Siblings - Kiddo Shorts Blue - Size 7-8 Sale price$35.00 Regular price$49.00
A wooden hanger displays the PRE-ORDER Minnie Singlet, a white sleeveless tank top by SUNDAY SIBLINGS, made from ribbed cotton fabric with "SUNDAY SIBLINGS" printed in red, against a plain white wall.A cheerful toddler with blonde pigtails is wearing the PRE-ORDER Minnie Singlet by SUNDAY SIBLINGS, a white sleeveless top made of ribbed cotton fabric. She pairs it with pink shorts adorned with star details while holding a lollipop and standing outdoors amidst greenery.
SUNDAY SIBLINGS
Minnie Singlet - Size 4-5 Sale price$32.00 Regular price$45.00

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