La Perla Layla Push Up Underwire Bra (4092). The La Perla Layla Push Up Underwire Bra 4092 is beautifully fashioned with Leavers lace and features removable padding for a graduated push up. La Perla's Layla Push Up Underwire Bra is made of polyamide (nylon) with elastane for stretch and a cotton lining.