Happy birthday baby! Una Healy celebrates Ben Foden's 25th by slipping into a little white dress

By Jessica Satherley

Last updated at 3:19 PM on 23rd July 2011

It was her boyfriend’s 25th birthday, so Una Healy made sure to celebrate by slipping into a little white dress and peach peep-toe heels.

The Saturdays singer took her rugby star beau to Nobu restaurant in London, where they dined alongside her parents, Ben’s brother Tom and friends.

She tweeted on the special day: ‘HAPPY BIRTHDAY to the love of my life @ben_foden.’

Lovely in white: Una Healy slipped on a lovely little white dress and peach peep-toe heels to take her boyfriend Ben Foden out for his birthday

But the 29-year-old Irish beauty didn’t appear to end her night with such excitement, as she had to fill her car up with petrol and take her parents home.

Meanwhile her long-term boyfriend apparently went off for a boys’ night out following their dinner.

Ben left the restaurant arm in arm with his singer girlfriend before going in separate directions and looked very chic in smart jeans and a grey suit jacket.

Meanwhile, the couple have an exciting month ahead, as they will be attending Zara Phillips and Mike Tindall’s royal wedding on 30 July.

Cute couple: Una and Ben left Nobu hand in hand before going off in separate directions after the dinner

Nice tan! Despite the disappointing summer weather in the UK over the past week, Una was sporting a healthy tan

Ben plays rugby with Mike and after sparking up a friendship, Zara and her fiancé invited the couple to attend their ceremony at Canongate Kirk on Edinburgh's Royal Mile.

Una has been frantically trying to decide what to wear and is trying to find the perfect dress.

She told the Daily Star recently: ‘I don’t know what to wear, maybe the same designer that made Princess Beatrice’s hat for Kate and Wills’ wedding?’

Zara and Mike will also have about 20 friends from Australia attending the wedding, as that’s where they met and fell in love in 2003 while Mike was playing in the Rugby World Cup.

End of the night: Una had to stop off at the petrol station after dinner with Ben

Home time: Una was dropping her parents home after the meal while Ben had a boys' night out

Other more high profile guests include the Queen and the Duke and Duchess of Cambridge, William and Kate.

But on top of finding wedding outfits, Una has been busy promoting The Saturdays latest single titled Notorious, which was released in May ahead of their upcoming third album.

Una and her band mates Frankie Sandford, Vanessa White, Mollie King and Rochelle Wiseman are said to start their third headlining tour All Fired Up Tour later this year.