Hailey Baldwin strikes back at family rival Ireland by slipping into pretty blue bikini
They have a friendly rivalry over who exactly is the Baldwin family's top young beauty.
And Hailey struck back at rival Ireland by slipping into a pretty cobalt bikini in Florida on Monday.
The 17-year-old will have won over a whole new set of fans after showing off her chic seaside look while paddling in the surf on a beach in Miami.
Seaside chic: Hailey Baldwin looked pretty in a blue bikini on Miami Beach on Monday
Hailey, whose father is Usual Suspects star Stephen Baldwin, looked tanned and healthy as she enjoyed her day in paradise.
Her phoney war with professional model Ireland, whose father is 30 Rock favourite Alec and mother is Batman actress Kim Basinger, really kicked off after the latter posted a jokingly catty tweet about Hailey earlier this month.
She wrote: 'Who is the cutest Baldwin? Me. Durka durka. Yeah, sure she's pretty, but does she make you laugh and a killer PB & J?'
Who's cutest now? Hailey firmed up her claim to be the best looking young Baldwin at cousin Ireland's expense
Summer holiday: Hailey has been using her school break to work on her tan with an like-minded friend
Ab-solutely fabulous: It looks like the teenager has been doing plenty of sit-ups going by her six-pack
She's not blue: Hailey was having a jolly time by the ocean
And she seems to have inherited her father's infamous temper, for when people did not realise she had been kidding and sprung to Hailey's defence it seemed to strike a raw nerve.
She tweeted: 'So lets establish something here before all of you morons blow things out of proportion.
'When I tweeted that I was the cutest Baldwin it was a joke pertaining to the selfie my dad posted if you hadn't noticed.
'I am in no way cuter than Hailey Baldwin nor to I have the desire to compete with anyone for that title. I don't give four f***s.'
Having a laugh: She nonchalantly kept her stomach flexed as she shared a joke with her companion
Running: She even recreated the famous Baywatch scene when she went for a jog on the sand
Worn out: All the stomach tensing seemed to have taken its toll as she got ready to leave the beach
Such a show off: She continued to draw attention to her taut tummy by wearing a high cut top as she headed off
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