Penny Lancaster, 53, wows in a tiny black bikini as she soaks up the sun with husband Rod Stewart, 79, on £50million yacht in Sardinia

Penny Lancaster dressed for the European heatwave as she set sail with husband Rob Stewart and their family in Sardinia.

The couple are enjoying a family break on a £50million yacht and as temperatures across the region hit the high 30s, Penny stripped down to a barely there black bikini.

The model, 53, looked incredible in the tiny halterneck bikini as she sunbathed on deck and chatted with her family.

Rod, 79, meanwhile tried to keep cool by draping a T-shirt over his head as he relaxed in a lemon yellow shirt and bold shorts.

Penny later swapped her bikini for a green and pink floral print cover-up as the family jumped on a dinghy to head to shore.

The Sailing singer has whisked most of his family away on the lavish holiday to Porto Cervo in Sardinia.

The rocker is enjoying the trip with six of his eight children, as well as his baby grandson Otis and several of his kids’ partners.

The blended family took to their Instagrams this week to share a slew of sweet snaps from the getaway.

One heartwarming shot showed Penny and Rod playing with one-year-old Otis on the boat, as the little boy burst into giggles.

The couple – who married in 2007 – were joined by their two sons Alastair Wallace, 18, and Aiden Patrick, 13, as well as Alastair’s girlfriend Eloise Darlington, 18.

Joining them were Kimberly, 44, and Sean, 43, — Rod’s two children from his marriage to actress Alana Stewart.

While his daughter from his relationship with model Kelly Emberg and Otis’ mother Ruby, 36, was there with her fiancé Jake Kalic.