Which is better for sleeping and lounging?

The Olivia Set. It is a relaxed cami and short in soft satin, made for comfort rather than support.

Which gives more support?

The Maverick Set. The underwire cups and four-setting hook and eye hold and shape the bust; the Olivia has no structure.

Can I wear the Olivia cami as a top?

Yes. Owners wear it out for a night, and the satin and lace trim suit that. The Maverick is underwear.

Which is better for a bridal morning or honeymoon?

Both work. The Olivia in ivory suits photos and getting-ready moments; the Maverick in red is the lingerie choice.

Both are delicate poly/elastane blends with the same cold hand wash care, so lifespan depends on how gently you wash and dry them.

Is the Maverick worth stepping up to over the Olivia?

Only if you want underwire support. If you want a set to relax in, the Olivia is the more useful buy.

Kat the Label Olivia Set vs Maverick Set White

These are not rival products. The Olivia Set is a satin camisole-and-short sleepwear set; the Maverick Set is an underwire bra and thong lingerie set. Buy the Olivia for lounging, bridal mornings or wearing the cami as a top. Buy the Maverick if you want structured underwire support under clothes. Both are delicate hand-wash pieces from the same brand, and both rate highly with owners.

Choose the Olivia Set if you want a relaxed satin cami and short to sleep, lounge or style as a top.
Choose the Maverick Set if you want an underwire bra with matching lace thong for support and shape under clothing.

Prices

Kat the Label Olivia Set: $50.00 at Poshmark (last seen Nov 9)
Maverick Set White: $90.00 at Kat the Label USA (last seen Nov 9)
Difference: the Kat the Label Olivia Set is $40.00 cheaper than the Maverick Set White at the latest prices (Nov 9)