Tamara Ecclestone bikini top slip down in the French Riviera

She spent a week cruising the French Riviera on a luxury yacht before returning to London.

But it was an extremely brief visit back home for Tamara Ecclestone who is now soaking up the sunshine in Sardinia.

The F1 heiress, 27, was in danger of popping out of her Missoni bikini top as she sunbathed with the straps down aboard yet another luxury vessel.

Svelte! Tamara showed off her stunning figure in a Missoni bikini and Tweeted pictures of the view to her page

In fact the patterned two-piece was in danger of slipping down to reveal her modesty as she stood up gazing out to sea.

She was seen chatting on the phone and snacking on food as she showed off her fabulous bikini body, which has landed her the role as the face of lingerie range Ultimo.

And it’s clear that Tamara was enjoying the view and tweeted a picture to her Twitter fans before posting: ‘Amazing day sun and sea. Am in heaven.’

Enjoying the view! Tamara Ecclestone was enjoying the sea scenery in Sardinia while her bikini began to slip down and was in danger of reveling her modesty

Gravity defying! How her bikini top managed to stay on is anyone's guess

After lazing in the beautiful day the heiress indulged in pamper ahead of her dinner at Cipriani followed by a night out at Billionaire Club.

On Saturday night, Tamara was seen with her boyfriend Omar Khyami, 37, in London, who she has been dating since last year.

The couple enjoyed romantic meal at Nobu ahead of a barbecue on Sunday.

Fruit snack! The 27-year-old heiress as seen eating an apple and tweeted that she was 'in heaven'

But her stint in the capital didn’t last long and Tamara jetted out to Italy on Tuesday.

Tamara admitted she had been suffering jet-lag after a whirlwind trip to New York last week for her sister Petra's wedding dress fitting.

Petra, 22, is set to wed businessman James Stunt in Italy over the Bank Holiday weekend later this month.

Busy night ahead! Tamara made the most of her day before getting a blow dry fr her night out dining at Cipriani and then onto Billionaire Club

The sisters' father, F1 supremo Bernie Ecclestone is reported to have paid £1million for The Black Eyed Peas to perform at the reception at the 13th Century Odescalchi Castle near Rome - the same venue where Tom Cruise married Katie Holmes.

During their visit to New York, Petra appeared on Good Morning America to discuss her purchase of the former Spelling mansion in Beverly Hills.

Despite adding the $85million to her pricey property portfolio, she insisted she was 'privileged, not spoilt' during the interview.

Coupled up! Tamara is holidaying with her stockbroker boyfriend Omar

This if the life! Tamara enjoyed the view from the top deck of her yacht