Custom One Happy Boy Birthday Baby T-Shirt | Sun First Birthday Outfits | Sunshine Birthday Theme | First Trip Around The Sun Birthday Outfit

Celebrate your little one’s first birthday with the sweetest custom “One Happy Boy” birthday baby T-shirt. Designed with playful retro lettering and a hand-drawn sunshine graphic, this baby tee is perfect for a sunshine birthday theme, first trip around the sun party, cake smash photos, and family birthday memories.

This cute first birthday outfit features a soft, comfortable infant tee with a classic fit that’s easy for babies to wear during parties, photoshoots, and everyday celebrations. Pair it with matching family shirts for Mama, Dada, Big Bro, Big Sis, Grandma, Grandpa, Auntie, Uncle, and more for a coordinated birthday look everyone will love.

Why You’ll Love It

♡ Perfect for a “One Happy Boy” first birthday theme
♡ Cute sunshine design with retro-style lettering
♡ Great for first trip around the sun birthday photos
♡ Soft infant fine jersey tee for all-day comfort
♡ Classic fit and true-to-size feel
♡ Easy to style with jeans, bloomers, shorts, or party outfits
♡ Perfect for cake smash photos, birthday parties, and family pictures
♡ Matching family shirt options available
♡ Custom text option for names or family titles
♡ Sweet keepsake outfit for your baby’s first birthday

Product Details

♡ Infant Fine Jersey Tee
♡ Rabbit Skins 3322
♡ 100% combed, ring-spun cotton
♡ Lightweight fabric: 4.5 oz/yd²
♡ Classic fit
♡ Runs true to size
♡ With side seams for shape and support
♡ Ribbed knit collar with seam
♡ Shoulder tape for extra stability
♡ Printed pocket-style sunshine birthday design

Sizing

All measurements refer to product dimensions.

♡ 6M: Width 10" / Length 12.5"
♡ 12M: Width 11" / Length 13.5"
♡ 18M: Width 12" / Length 14.5"
♡ 24M: Width 13" / Length 15.5"

Size tolerance: 1 inch.

Please check the size chart before ordering. If your baby is between sizes or you prefer a roomier fit, we recommend sizing up.

Customization

Add your baby’s name, birthday wording, or custom text to make the shirt extra special.

Popular options include:

♡ One Happy Boy
♡ First Trip Around the Sun
♡ Birthday Boy
♡ Custom Name
♡ Custom Family Matching Text

Perfect For

♡ One happy boy birthday outfit
♡ Sunshine first birthday theme
♡ First trip around the sun birthday outfit
♡ Baby boy first birthday party
♡ Cake smash photoshoot
♡ First birthday family photos
♡ Matching family birthday shirts
♡ Summer birthday party outfit
♡ Baby shower gift
♡ First birthday keepsake

Care Instructions

♡ Machine wash cold, inside out
♡ Wash with similar colors
♡ Tumble dry low
♡ Do not bleach
♡ Do not dry clean
♡ Do not iron directly on the design

Please Note

Colors may look slightly different depending on screen settings, lighting, and shirt color. Each shirt is made to order, so slight placement or color variations may occur. This makes every piece unique and special for your celebration.