Irish TV presenter Laura Whitmore, Girls Aloud singer Nadine Coyle and presenter Lisa Snowdon have embraced the floral trend, posing in a specially-designed t-shirt for an HIV prevention charity.
Alongside other celebrities including Lilah Parsons, Jo and Leah Wood and Tallia Storm, they are calling on fans to buy the 60s-style printed t-shirt from Liberty to support the MTV Staying Alive Foundation.
Here's how they look...
Lisa said: "Liberty London never disappoints! Their two gorgeous t-shirts exclusively for MTV Staying Alive are perfect for summer - and all for a fantastic cause."
Jo Wood and Leah Wood
The MTV Staying Alive Foundation trains and funds grassroots initiatives globally to provide education about HIV and sexual health. T-shirts cost £20, with 50% of profits going to the charity.