You know you can always rely on your friends.
So Penelope Cruz got her buddies on board when she wanted to raise awareness of her charitable cause.
And boy, did some Hollywood stars rock up to support her at the gala of The Art Of Elysium.
It's a new charity she's set up with Dolce & Gabbana to help sick children.
And the likes of best mate Salma Hayek, Lindsay Lohan, Mischa Barton and those Olsen twins all made the effort.
Have a browse in the gallery above to spot the celebs with a social conscience.
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