PJ Shirt | Sweetheart
Why You’ll Love It
The PJ Shirt in Sweetheart is the definition of cosy comfort with a playful twist. Crafted from our buttery soft 92% viscose and 8% elastane blend, it feels smooth, stretchy, and gentle against the skin.
Set on a rich maroon background scattered with swans, hearts, and stars, this print brings charm to your wind-down routine. It is sweet, relaxed, and perfect for slow evenings and even slower mornings.
Designed with a full button-up front and fabric-covered buttons, this long sleeve PJ shirt is breastfeeding-friendly and easy to wear. Finished with piping detail along the collar, down the front, and at the sleeve cuffs, plus a functional front pocket, it blends comfort with thoughtful detailing.
- 92% viscose, 8% elastane blend
- Buttery soft and stretchy feel
- Maroon base with swans, hearts, and stars print
- Button-up front with fabric-covered buttons
- Breastfeeding-friendly design
- Long sleeves with piping detail at cuffs
- Piping detail along collar and front placket
- Functional front chest pocket
- Unlined for soft, breathable comfort
- Pregnancy-friendly and postpartum-friendly fit
This is the PJ shirt you will reach for night after night. Soft enough to sleep in, polished enough to lounge in, and practical enough for midnight feeds.
How It Fits (Spoiler: Like a Dream)
A little TLC for your piece
Garment Measurements
| XS | SM | ML | LXL | XXL | 3XL | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length | 27.5" | 28.3" | 28.7" | 29.1" | 29.5" | 29.9" | 70 cm | 72 cm | 73 cm | 74 cm | 75 cm | 76 cm |
| Chest | 47.2" | 48.8" | 52.7" | 56.6" | 60.6" | 64.5" | 120 cm | 124 cm | 134 cm | 144 cm | 154 cm | 164 cm |
International Size Conversion
| Label | XS | SM | ML | LXL | XXL | 3XL |
|---|---|---|---|---|---|---|
| AU / NZ | 6–8 | 10–12 | 12–14 | 16–18 | 20–22 | 24–26 |
| UK | 6–8 | 10–12 | 12–14 | 16–18 | 20–22 | 24–26 |
| US | 2–4 | 6–8 | 8–10 | 12–14 | 16–18 | 20–22 |
| EU | 34–36 | 38–40 | 40–42 | 44–46 | 48–50 | 52–54 |
| On Label | XS | SM | ML | LXL | XXL | 3XL |
Measuring your body: Use a soft tape measure directly against your body. Measure your waist at the narrowest point and your hips approximately 20 cm below your natural waist.
Compare to a favourite piece: Measure a similar garment you already own and love, then compare to our size guide for the most accurate fit.
Between sizes? We generally suggest sizing down as our clothing is designed to be flowy. Measurements may vary by 2–3 cm as each garment is measured by hand.
Select a size to see its exact garment measurements and what to expect from the fit on your body.
Sits beautifully on a smaller frame — relaxed through the chest with beautiful volume.
Eased through the chest. Falls at a flattering length for most frames.
Our most popular fit. Generous through the body — effortless and flattering.
Relaxed and roomy with gorgeous movement. Wear it and own it.
Maximum ease and volume. A bold, confident silhouette that commands a room.
Generous and celebratory. Designed to be worn with total confidence and ease.
Grab a soft fabric tape measure. Stand naturally, feet together. Measure over underwear or a single lightweight layer for the most accurate results.
The Three Measurements That Matter
Place the tape close under the armhole at the fullest part of your bust. Measure from side seam, around and back to the same side seam.
Keep the tape parallel to the floor — snug but not tight.
Measure at the narrowest point — usually 2–3 cm above your belly button. Place the tape from side seam, around and back.
Exhale naturally before taking the measurement.
Place the tape approximately 20 cm below your natural waistline at the fullest part of your hips. Measure all the way around.
Stand with feet together for the most accurate result.
Still not sure on sizing? Our team knows every style — we're here to help.
Get In TouchWorn & Loved
Real members. Real fits.
Customers praised these pajamas as "the softest pjs ever" with a "gorgeous" design that makes them feel refined. The fabric delivers exceptional comfort, making them ideal for special occasions like postpartum. However, some noted the sleeves are oversized to the point of being impractical.
I have been wanting a Lullaby club pj set for just over 12 months now but could never choose which print I wanted. When I saw the Mothers Day collection and the print, my gosh I was in love. I ordered the button up shirt & shorts for myself and the matching onesie and romper for my daughter and we absolutely love them. The best quality, so comfortable and buttery soft.
Sounds dramatic, but these might be the best pyjamas I’ve ever worn. It’s the fabric, the feel, the fit, they’re so chic and comfy at the same time it’s hard to beat! I’m a size 8-10 on top but like my pyjamas with room. These are generous, I got the XS in the shirt.
Since receiving these, I haven’t taken them off. So soft, buttery and comfortable. Any chance I get to put them on when I get home, I do. Absolutely obsessed and the print is so cute!
Love these pjs so much! I’m a petite girl 5’1 and would have loved for these to come in a smaller size XXS. XS i found was very big for me, however still kept as the material is amazing.
Lullaby you win, this is the best PJs I have ever worn
Gorgeous and so comfy but the sleeves are oversized to the point of being impractical.
Most gorgeous collection
I absolutely love these pjs. I bought them for postpartum and to have something special to take to the hospital with me and they have not disappointed! I feel refined in these.
Great pj shirt. So so comfortable.
So comfy and stretchy! I bought them 37 weeks pregnant in my pre pregnancy size and there’s plenty of stretch! These will save me postpartum
Soooo lovely and soft and perfect sizing
The buttons don’t stay closed tho, I’m going to have to sew the entire shirt shut
Beautiful fabric and the print is one of a kind you won’t find anything quite like it.
Super soft, comfy and cute!
Great quality, perfect fit if you like more oversized pyjamas.
This shirt is so buttery soft and lovely to wear. It is breathable and comfy and the pattern is so iconic Australian - it’s the perfect Christmas gift or treat for yourself!!
Runs one size bigger than usual, very soft and stretchy. I bought the XXL for oversized fit based on measurements but returned for L/XL and still has plenty of room. Good length (Im 173cm).
Perfect for Aussie summer, doesn’t stick to you in the heat.
These are super soft, comfy and wash up so lovely! I want to live in them! Not the best sleeves for washing dishes or changing dirty nappies so best just to ignore all those duties and relax in the pjs instead!!
The most buttery soft material ever! This print is my absolute favorite!
Absolutely luxe, soft and comfortable! Easy to unbutton one handed for breastfeeding! It's meant to be an oversized fit, but I sized down to a M/L (usually a 16) and still have plenty of room!
Fabulous, comfy and lovely top to sleep in as well as wander around the house doing jobs. Highly recommend!
In love with this set! Only downfall is the super flowy sleeves but the material & print is 🤌🏼🤌🏼
I love this PJ set, it’s very luxurious with soft, stretchy fabric. Makes me feel somewhat better about the early wake-ups for Bub. I would, however, prefer the sleeves weren’t quite as wide/long at the wrists since it can get in the way a little.
Love this top so much. Floaty and perfect for my last bit of pregnancy and will be perfect for my breast feeding.
Meet the Makers
We partner with a small group of trusted factories in Guangzhou, China to bring our designs to life. Each piece is made with care by skilled makers who share our commitment to quality, comfort, and intentional fashion.
