Drew Barrymore is helping Frances Bean Cobain plan her wedding.

The 'Blended' actress, who gave birth to second daughter Frankie just three weeks ago, has reportedly stepped in to help her goddaughter, who is the daughter of Courtney Love and late Nirvana frontman Kurt Cobain, plan her upcoming nuptials to Isaiah Silva, as she and the 21-year-old artist are very close.

A source said: ''Frances, like Drew, goes for free-spirited elegance, so right now, they're trying to decide whether to have the wedding at a northern California vineyard or on an exotic beach in Mexico.

''Drew is fielding calls from designers and stylists while nursing Frankie and sorting through catalogues for invitations and centrepieces.

''She's relishing every moment of playing mother of the bride.''

Frances and Isaiah reportedly spend a lot of time at Drew's home and see the actress and her husband Will Kopelman - who also have 19-month-old daughter Olive together - as good ''role models''.

The source told National Enquirer magazine: ''Frances and Isaiah love spending time at the Kopelman's house, even though it's frequently a chaotic roller coaster. [They are] perfect role models.''