Age is just a number. And whether you're 22 or 52 like actress Elizabeth McGovern, you can make the little blue party dress work for you. We love how the Downton Abbey star styled her strapless blue prom dress with a high gold choker to make the most of her exposed décolletage and green (yes, green!) handbag and shoes. Whoever said blue and green should never be seen hadn't seen this glam get-up! If you want to recreate Elizabath's sophisticated but fun party dress look our Ruby Ray Handkerchief Dress in Cobalt Blue is perfect. Featuring a similar sweetheart neckline to emphasise your bust, a bodice style bustier - great for creating a covetable hourglass silhouette - and flirty ruffled dip-hem design, this dress is not for the faint for fashion heart. Steal her style: Ruby Ray Handkerchief Dress in Cobalt Blue, £190; Moda in Pelle Calleen Shoe in Nude Patent, £59.95; Aftershock London Dahlia Gem Clutch, £71. Shop all blue dresses here.