Penny Lancaster and her family are already enjoying the summer holidays, and on Thursday, Rod Stewart's wife posted a stunning photo from the beach – much to her fans' delight.MORE: Penny Lancaster looks stunning in slinky dress as she poses with topless Rod StewartThe 51-year-old headed to a beach in Malibu to see the sunset and couldn't help but pose for a fun picture in the meantime.WATCH: Loose Women's Penny Lancaster opens up about 'frightening' condition in heartfelt interviewIn the photo, Penny can be seen donning a black mini dress, with her blonde hair loose in soft waves, whilst posing inside a pink float featuring bananas.WOW: Rod Stewart's wife Penny Lancaster stuns in gorgeous dress for menopause pledgeMORE: Rod Stewart and Penny Lancaster celebrate amazing news – and look at Penny's dressFans rushed to comment on the lovely snap, with many calling her "beautiful". Penny Lancaster is currently in Malibu"You are such an amazing woman...