Penny Lancaster rocks a very young looking Rod Stewart T-shirt

Holding back the years: Penny Lancaster rocks a very young looking Rod Stewart T-shirt

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UPDATED:

13:09 GMT, 18 March 2012

Penny Lancaster showed that she wears it well as she made a big fashion statement earlier this week.

The former model stepped out in Beverly Hills, California, wearing a T-shirt with a picture of her famous husband on it.

The 41-year-old sported a top with rock star Rod Stewart on it, from back in his younger days.

Rock star: Penny Lancaster rocks a Rod Stewart T-shirt in Beverley Hills, earlier this week

Rock star: Penny Lancaster rocks a Rod Stewart T-shirt in Beverley Hills, earlier this week

Penny looked relaxed as she left a spa and waited for her car to pick her up.

Rock star: Penny Lancaster rocks a Rod Stewart T-shirt in Beverley Hills, earlier this week

She wears it well: Penny looked relaxed after leaving a spa

Dressed casually in the T-shirt and light brown corduroy trousers with a pair of flip flops, the mother-of-two headed home.

Penny and Rod had been seen earlier this week celebrating her birthday at Spago's restaurant in Beverly Hills.

The 67-year-old music legend took along some interesting reading to keep him occupied during dinner, however.

Rod was spotted with a magazine called Hoops, which is the official fanzine for his beloved Celtic Football Club.

Singing legend Rod Stewart takes out his wife Penny Lancaster-Stewart to Spago's in Beverly Hills possibly to celebrate Penny's 41st birthday.

The birthday girl: Penny and Rod dined at Sprago's, earlier this week

The birthday girl: Penny and Rod dined at Sprago's, earlier this week