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Choosing a Babygrow

A babygrow is the most comfortable item of clothing your baby can wear throughout their earliest stages of life, allowing them to be completely mobile as well as cosy, warm and protected.

Babygrows from Tilly and Jasper are made from soft, breathable, organic cotton, so you don’t need to worry about your baby being irritated and uncomfortable.

Layer under clothes or wear separately for an abundance of different occasions, babygrows are designed for sleep and play, and make for the perfect cosy layer in the coldest of months.

Whether you’re looking for rompers, zip-up babygrows or one-piece sweats, we offer a wide range of gorgeous pieces that are both ethical and suitable for your little one.

A Quick Guide To Babygrow Sizes

Age (Months)Height (cm)
1 month56
0-3 months62
3-6 months68
6-12 months80
12-18 months86

How To Measure Your Baby or Toddler’s Sizing

Not all babies are the same height at the same age, which is why we provided our helpful sizing chart above.

To check which size is best for your baby, simply measure them from head to toe in cm.

Always opt for a size above if your baby is in-between sizes. This allows for growing space and means that the babygrow won’t be too tight.

Types of Babygrow

Long Sleeve

Long sleeved babygrows are perfect for the colder months, as well as suitable for wearing while out and about or playing.

Available in an array of different openings, long sleeve babygrows are designed with zips, poppers and wide-opening head spaces to make getting dressed a comfortable and tear-free experience.

Short Sleeve

Perfect for summer, short sleeve babygrows are available in vest style designs as well as shoulder-length sleeves, to keep your little one cool while playing or sleeping.

Short sleeve babygrows are also ideal for wearing underneath other outfits, offering a layer of warmth and protection underneath clothes worn for venturing out and about.


Rompers are perfect for everyday play and are available in both long sleeve and short sleeve selections.

Baby rompers often come with short length legs instead of long ones, as this gives your little one more room to move and play in.

If you’re looking for a summer suit, a romper is the perfect choice for you and your baby.

Full Body

Full body babygrows comfortably cover your baby’s entire body, including their feet.

These can also be referred to as sleepsuits, as they are specifically designed to be worn while sleeping.

In some cases, full body babygrows also come with hats and mittens, which are ideal if being worn in colder months or if your child requires extra protection at nighttime.

Ordering Your Babygrow


If your order has been accepted, we will dispatch your order as quickly as possible Monday to Friday. Orders over £10 are eligible for free standard shipping (2-4 days), orders over £30 will receive their order via 1st class shipping (1-2 days), and orders over £60 qualify for DPD, next working day delivery. You are welcome to pay for faster shipping should you so wish. Orders placed after 1pm on Fridays will be dispatched the following Monday. For any orders placed over the weekend, these will be processed the following Monday.

Once your order has been fulfilled, we will send you a confirmation email to the address you entered in your order. This will include your unique tracking number to track your parcel from the courier, if applicable. You can then track the progress of your delivery from dispatch to delivery.

Find out more about delivery information.


Reusable Nappies

Eco-friendly and kind to your baby’s skin, reusable nappies can comfortably be worn underneath babygrows.

Preventing the amount of plastic waste created, reusable nappies help you maintain a reduced carbon footprint while helping to protect the environment as well as your little one’s bottom.

Dresses and Skirts

Perfect for wearing over the top of babygrows, baby dresses and skirts turn any relaxing outfit into a stylish look that’s suitable for going out and about in.

Muslins and Swaddle Blankets

Whether your little one is newborn or 6 months old, muslins and swaddle blankets are essentials.

Provide as a comforting blanket for your baby or keep for emergencies, eco-friendly blankets from Tilly & Jasper are designed to last.


While babygrows might be ideal for wearing on beachside holidays, suitable swimwear is vital when it comes to going for a little paddle.

For extra protection from the sun, opt for a full coverage sun hat to go with your baby’s outdoor babygrow outfit.

How to care for your Babygrow

  • Always read the care label on your babygrow before washing or ironing
  • Use non-bio washing powder to make sure that your baby’s skin isn’t irritated
  • Always wash brand new clothing before being worn to ensure any impurities are washed away before touching your baby’s skin
  • Let any tough stains soak before washing. If bleach or strong stain remover is used, make sure to wash the babygrow thoroughly before use
  • If your baby struggles with fitting clothing over their head, opt for a babygrow that opens fully, such as one with a zip or popper design
  • If the babygrow fits too tightly around your baby, size up so that your baby is comfortable


  • Always follow the care label instructions
  • Use non-bio washing powder
  • Wash babygrow before wear
  • Opt for zip-up or popper babygrows if your baby isn’t comfortable with
    having items over/on their head
  • Size up if you’re unsure


  • Wear straight after using bleach on stains
  • Wear straight after purchase without washing first
  • Use dyes or harsh chemicals on the babygrow without thorough washing
  • Force a babygrow over your baby’s head if they are uncomfortable


We hope you love everything you order, but in case you don’t, not to worry. We will happily accept returns for unused merchandise in its original condition at time of purchase for up to 30 days from purchase date.

See here for more information on returns.

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