The glamour model was probably desperate to cool down after reading the saucy S&M bestseller 50 Shades of Grey, dubbed Mommy Porn.
Thomas was on tenterhooks while reading the erotically charged novel - choosing to continue reading instead of lazing on the loungers.
Can't get enough: Imogen Thomas is gripped by the erotically charged bestseller 50 Shades of GreySqueezing into a patterned bikini, Thomas sat next to the pool while she dipped both her feet into the waters and her nose in the book.
Eventually she managed to get away from the gripping storyline to go for a swim.
Thomas tweeted: 'Loving and addicted to 50 shades of grey: dominant or submissive which one are you?'And if Thomas is in a bikini, photographers won't be far away.
The beautiful Big Brother star posed for cameras during her swim, but we're sure it wasn't long before she went back to some more lurid chapters of the novel.
Summer loving: Thomas is clearly enjoying the London weather at the momentBut it didn't seem to have spoilt her summer fun yesterday, parading through a London park wearing denim hot pants, a string bikini and eating an ice lolly suggestively.
Relaxed: The Welsh beauty is all smiles after sunning it up in the poolUniversal Pictures have bought the screen rights, and fans have set the internet abuzz with who they think should play the the manipulative billionaire who introduces a college graduate to the world of bondage and kinky sex.
Ice cool: Thomas was out in the London sun yesterday, where was caught suggestively sucking an ice lollyE.L. James' explicit sensation has topped charts practically since its release in April, and filming for the big-screen version will reportedly begin in September.
Of course, Thomas may have to put on more clothes when she heads to the cinema though.
There for her: Jedward accompanied their pal Tara Reid on a stroll along the beach in St Tropez yesterday
Cosy: Tara seemed more than comfortable in the twins' company, linking arms and holding hands with them
Smartened up: John and Edward had taken the time to restore their hair to its usual vertical style
'I can handle this!': Either John or Edward seemed fairly determined to take a canoe for a spin
Having trouble walking in those? Jedward's trousers were if possible even tighter than ever
Helping her recover: The relentlessly positive twins must be perfect company for Tara, who has recently been in hospital
Entertaining themselves: The threesome hit Club 55 together
Just what she needed: Tara has tweeted that she is feeling much better
Party time: Tara Reid and Jedward enjoyed the sunshine in Saint Tropez, France, yesterday afternoon
Real heroes: Jedward wore Superman vests and tiger stripe trousers with red trainers
Walk this way: Tara looked back at her best as she and Jedward headed for lunch at Club 55
Novelist Marion McGilvary has opened up about how lonely an empty house can feel
Marion McGilvary says too much 'me time' leaves her feeling lonely
Bright spark: Minnie Driver was a sight for sore eyes in a pair of electric pink workout leggings today

Eye-catching style: Minnie also sported a simple white top and trainers and off-set the neon with a cobalt blue handbag
Fantastic at 42: It's no wonder Minnie is happy to show off her figure when she looks so good in skin-tight leggings
On the go: Minnie made a phone call as she hurried through Beverly Hills to get to her exercise session
Fuss-free: The star appeared to be wearing no make-up but covered up her face with a pair of aviator sunglasses
Family time: Minnie enjoyed a day out with her three-year-old son Henry in Malibu over the weekend
Taking her turn: Chris Hemsworth's wife Elsa Pataky took their daughter India for a stroll in Santa Monica today
Gentle but firm: The Spaniard made sure she always had a good grip as she enjoyed the summer sunshine

Happy couple: Aussie Chris loves carrying the ambrosial youngster whenever they go walkabout as a family
