Something that Rihanna should have taken on board last night for her gaping neckline.
Because her cleavage just about stayed in place inside the lacy neckline as she leaned over to greet some famous friends at a charity gala in New York
Revealing: Rihanna all but gave the game away beneath her plunging neckline as she posed for pictures at the Linked Against Leukemia gala
Rihanna, 23, arrived at the 5th DKMS Linked Against Leukemia gala at the Cipriani Wall Street venue.
She looked stunning in a long lack gown, but as she posed for photos, she almost gave the game away beneath the dress's plunging neckline.
Nice to see you! Rihanna was in danger of popping out as she chatted to David Bowie and his wife Iman
Careful! Rihanna's displays her cleavage as she bends down to shake Bowie's hand
And thankfully, as she stooped to chat to the famous singer and his model wife, her cleavage stayed in place as she bend over to shake Bowie's hand.
Rihanna was a guest of honour at the event where she was honoured for her dedication and fundraising work in the fight against the disease.
She said: 'Anyone can be affected by leukemia. It is the number one disease children in the U.S. die of and we can change that.
Stunning: Rihanna looked sensational in her long black gown
Another close call: Rihanna flashed her cleavage as she adjusted her dress
'I encourage people to become bone marrow donor with DKMS. If we have more donors, we can save more lives.'