Maternity Activewear Size Guide | Find Your Perfect Fit | Latched
How to Choose Your Size
Finding the perfect fit is essential for comfort and confidence throughout your motherhood journey. Our award-winning maternity and postnatal activewear is designed to support you through pregnancy and beyond.
General Sizing Philosophy
At Latched, we design our products to grow with you. Our pieces are engineered to accommodate your changing body while providing the support you need to stay active and comfortable.
Key Principles:
- Choose your pre-pregnancy size in most cases
- Our fabric has strategic stretch to accommodate growth
- When between sizes, consider your stage of pregnancy and personal comfort preference
- All products are tested by real mums for real-life wear
How to Measure Yourself
For the most accurate fit, take your measurements wearing minimal clothing:
Bust: Measure around the fullest part of your bust, keeping the tape parallel to the ground
Under Bust: Measure directly under your bust where the band of a bra would sit
With so many leggings to choose from and the collection expanding hopefully this bump guide will make it a little easier to get the right leggings for you
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Show- newly pregnant and your regular clothes are becoming a little tight. Generally the 1st trimester.
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Glow - your bump has popped and theres no more squeezing into your jeans with the hair band hack. Generally the 2nd trimester.
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Grow - You are in the thick of it now. You can't really see your toes any more and baby has made themselves at home. Generally the 3rd trimester.
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Whoa - Yes I am aware I have a big bump. Its not polite to ask "Oh my god, are you having twins". I can't get out of bed in the morning and yes i'm struggling to get dressed. Perfect for comfort throughout your pregnancy and for mums with larger bumps or carrying multiples.
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Postnatal - You've got through labour and you're ready to get moving but need added support, extra pockets and thick fabric to hide any pads or knickers. The 4th trimester and beyond.

Size Charts
Product-Specific Sizing Recommendations
Breastfeeding Sports Bra
Our Best-Seller & Award Winner
Sizing Advice:
- Order your pre-pregnancy rib measurement size
- If pregnant: you can use the bra extender that comes with your bra to add upto 2 extra inches to the band. This ensures you can still breathe!
- If breastfeeding: Your current size should work perfectly, we understand that your cup size can fluctuate by up to 2 sizes before and after a feed. This is why our products are made from high quality and adaptive fabric.
- Between sizes? Still Unsure? Order more than one to try on at home and return what you don't need to ensure the best fit.
Fit Notes:
- Designed to accommodate breast size changes during pregnancy and postpartum
- Adjustable straps allow for customisation
- Should feel snug around your ribs but not restrictive
- The band should sit flat against your ribcage without riding up
When to Size Up:
- Your breasts have increased more than two cup sizes
- You prefer a more relaxed fit
- You're experiencing engorgement regularly
When to Size Down:
- The band feels loose even on the tightest hook
- You're several months postpartum and your breasts have reduced significantly in size

Everyday Bra
Perfect for Daily Comfort
Sizing Advice:
- Follow the same sizing as our sports bra
- This style runs true to size
- Choose your current bra size for optimal support
Fit Notes:
- Designed for all-day wear with gentle support
- Should feel comfortable without underwire pressure
- Ideal for lounging, daily living, light activity, and sleep
- Provides easy breastfeeding access
Perfect Fit Indicators:
- Band sits comfortably without digging in
- Straps don't slip off shoulders
- Provides gentle support without compression
- Easy clip access for feeding

Maternity & Postnatal Active Support Leggings
Award-Winning Best Maternity Leggings
Sizing Advice:
- Order your usual size
- Our fabric stretches to accommodate your growing bump
- Designed to fit from early pregnancy through postpartum
Fit Notes:
- High-waisted design provides bump support and coverage
- Four-way stretch fabric grows with you
- Compression level is supportive but comfortable
- Should feel secure without rolling down
During Pregnancy:
- First trimester: Will fit due to high quality elastane
- Second trimester: Perfect supportive fit over bump, pull them up as high as you can
- Third trimester: Fabric stretches to accommodate full bump, will help with back and pelvic pain through mild compression and support
- The waistband should sit comfortably over your bump, not dig in
Postpartum:
- Provides gentle compression for recovery
- Returns to pre-pregnancy fit
- Supportive for exercise as you rebuild strength
When to Size Up:
- You're carrying multiples
- You prefer a less compressive fit
- Your pre-pregnancy size feels too snug in the third trimester

Maternity Jumpers & Tops
Sizing Advice:
- Order your pre-pregnancy size for a fitted look
- Size up for a more relaxed, oversized fit
- Consider your layering preferences
Fit Notes:
- Designed with extra length to cover your bump
- Fabric has stretch for comfort
- Breastfeeding-friendly designs where applicable
Style Considerations:
- Fitted style: Stick to your pre-pregnancy size
- Relaxed style: Consider sizing up for comfort
- Layering: If you prefer wearing over other pieces, size up
Pregnancy & Postnatal Shorts
Sizing Advice:
- Order your pre-pregnancy size
- Follow the same guidance as our leggings
- Designed to grow with your bump
Fit Notes:
- Should sit comfortably on your hips or bump
- Leg bands should not dig in or create discomfort
- Length is designed to prevent riding up during activity
Perfect Fit Indicators:
- Waistband stays in place during movement
- No gaping at the waist or legs
- Comfortable compression without restriction
- Suitable for yoga, gym, walks, and everyday wear
Still Unsure About Your Size?
Try Our Sizing AI Bot: Available on our website to help you find your perfect fit based on your measurements and stage of motherhood.
Contact Us: We're here to help! Reach out with your measurements and questions, and we'll provide personalised sizing recommendations.
Our Returns Policy: We want you to feel confident in your purchase. If the size isn't quite right, we offer easy returns and exchanges.
Sizing Tips for Success
Do:
- Measure yourself regularly during pregnancy as your body changes
- Consider your activity level when choosing compression levels
- Read customer reviews for real-world fit feedback
Don't:
- Assume your size based on other brands
- Order blind hoping to "fit into it" postpartum
- Forget that your body changes throughout the day (measure in the morning)
Why Sizing Matters
Proper fit ensures:
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Support: Especially important for growing bumps and changing breasts
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Comfort: Prevents chafing, digging, and restriction
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Confidence: Feel great while staying active
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Durability: Correct sizing means your products last longer
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Performance: Optimal support for your workouts and daily activities
Remember: Every body is different, and pregnancy affects everyone uniquely. These guidelines are starting points, and we're always here to help you find your perfect fit. Our mission is keeping you moving comfortably through motherhood.