SANDRA BULLOCK has been dropping jaws in Hollywood with a fantastic makeover.

At the recent Teen Choice Awards, Sandra, who’s pushing 50, wore a head-turning sequined mini-dress by Antonio Berardi and strappy Casadei heels.

The Hottie-wood beauty’s new vamped-up image comes after a shakeup of her style team, The ENQUIRER has learned.

And Hollywood gossips are wondering if her sexy new look is aimed at put­ting the romance back in her life and maybe even helping her hook a hubby.

The actress has seem­ingly largely been off the dating scene since her world came crash­ing down in 2010. That’s when her husband of four years, Jesse James, was caught cheating with tattooed model Michelle “Bombshell” McGee.

But now, a friend says the emotional wounds have healed and Sandra’s looking stylish and sexy.

“She sees Halle Berry, Jennifer Aniston and oth­ers looking almost half their age and she wants to amp things up, big-time,” revealed a close source.

“She wants to feel sexy and confident.”

 To help her reach her goals, the Oscar winner recently hired high-powered Elizabeth Stewart, who has fast become the most sought-after stylist in Hollywood, counting Jennifer Lawrence, Cate Blanchett, Julia Roberts and Jessica Chastain among her A-list clients.

The source believes Elizabeth will help San­dra stand out from the crowd on and off the red carpet.

“She’ll be trying out sleek new de­signs that will celebrate her curves, plus she’s likely to experiment with some bold new hair­styles,” the close source divulged.

Lately, the actress has been super-pumped by the blockbuster success of her buddy movie, “The Heat,” in which she plays an uptight se­nior FBI agent opposite “Bridesmaids” sensation Melissa McCarthy.

“Sandra is ready to move forward with a new chapter in her life,” said the source.