Victoria Beckham recently revealed that she has been enjoying reading some new books during the family's summer break, and now she's invested in a new purchase so she can keep reading wherever she is – a portable reading light.RELATED: David and Victoria Beckham's Miami home rivals a seven-star hotel - inside photosDavid Beckham couldn't resist poking fun at his wife's new purchase in an Instagram post on Thursday, and he gave fans an unprecedented glimpse inside their incredible Miami penthouse in the process.WATCH: Victoria Beckham showcases incredible Miami dressing roomSharing a photo of himself relaxing in their living room wearing some sunglasses from his own collection, David joked: "@dbeyewear at golden hour. Just joking that's my wife's new book light."The photo showed David sitting on a sofa in their luxurious home, which has floor-to-ceiling windows overlooking the Miami skyline.RELATED: The Beckhams' £73million property portfolio revealed - from London to Miami David Beckham shared a glimpse inside his Miami living roomThe retired footballer then revealed another glimpse inside Victoria's new dressing room as she put her new reading light to the test, writing: "@victoriabeckham BODY.