Jennifer Lawrence

As a campaign girl for Dior, Lawrence is bound to wear something by the French house, as she has before. There's no doubt the combination of her cute-iful looks and Raf Simons's edgy-but-elegant designs is a good one. But, if pushed, it sometimes feels a bit old for her. Christopher Kane's evening options for spring – slithery slip dresses with added jewels or pastel shifts with paisley keyhole patterns – could be a cooler take. New Hollywood royalty in new designer royalty gets top marks in the fashion-celebrity books.

Judi Dench

With Helen Mirren flying the flag for older women who look amazing on the red carpet, Judi Dench hasn't really blipped on to the fashion map for years. Her look tends to be ornate, embroidered Indian-designed trousers and tunic, or velvet trouser suits that look a bit dated. Spotted recently at the Stella McCartney Christmas party, Dench could look wonderful in something from the British designer. The fluid trouser suits in soft navy or off-white from the spring collection would be a smart – and easy – update.

Lupita Nyong'o

The 12 Years a Slave actor might be a newcomer, but she has already been embraced by fashion. Nyong'o knows her way around designers and has worn brands ranging from Antonio Berardi to Prada and Sophia Webster, rarely putting a foot wrong so far. While she seems to favour block colour, pattern – as on the Miu Miu dress she wore for the 12 Years a Slave premiere in October – gives another dimension. As such, we'd love to see her in the Prada collection for spring. Poptastic but elegant too, she could carry it off for sure.

Sandra Bullock

A veteran of the red carpet, Bullock favours designers such as Elie Saab and J Mendel for textbook glamour. But, let's be honest, that is pretty safe – and for a woman nominated for playing an astronaut, maybe this is the time to go out on a limb a bit. Dolce & Gabbana's ancient Roman fantasy would look fabulous on her – specifically look 65, a green PVC dress with appliqué flowers. Job done.

Bradley Cooper

With the looks of a catalogue model, Bradley Cooper's style could come straight out of the era when people last used catalogues – the early noughties. He is a fan of the waistcoat, something Justin Timberlake used to wear when he was still going out with Britney. To update, he needs to simplify. A brand such as E Tautz could sort out the Cooper conundrum: designer Patrick Grant is all about smart, classic tailoring with just enough edge.