Who? Heidi Klum
What? The supermodel and TV presenter, who is currently on holidays in the Bahamas with her children and security guard boyfriend Martin Kristen, tweeted a picture of her sunburnt derriere late last night with the caption 'Ouch!'.
Where? Bahamas, 7 July.
Verdict? Wear sunscreen.
Heidi also posted pictures of her new hairstyle - AKA Bo Derek-esque braids.
And another of her bikini-clad bod silhouetted against the sunset.
And now for more supermodels...