Sophie Hunter showed off her post-baby body as the threater director made her first public appearance with husband Benedict Cumberbatch on Thursday since giving birth to their son three weeks ago.

The couple looked glamorous as they attended the Serpentine Gallery Summer Party in Kensington Gardens.

"The Imitation Game actor could not keep his eyes off his wife, who was showing no sign of sleepless nights," said Hello Magazine. "Sophie looked as stylish as ever in a full-skirted navy midi dress which she teamed with black heels and a clutch bag."

The "Sherlock Holmes" actor also coordinated with his wife, Sophie Hunter, when he wore a navy blue suit over a white shirt.

"He couldn't keep the smile from his face as he posed alongside Sophie for photos at the annual summer party, which was also attended by the likes of Kate Hudson, Suki Waterhouse and mum-to-be Fearne Cotton," the article added.

Aside from revealing her post-baby body, Daily Mail noted that Sophie Hunter doesn't look stressed from what should be sleepless nights for the weeks' old baby.

"Sophie has bounced back to her pre-baby figure and looked slim and pretty in a midi navy dress with a full skirt," the article said. "She wore her dark hair down around her shoulders and opted for some bright red lipstick, for a classy and chic look."

On the birth of "Sherlock Holmes" actor Benedict Cumberbatch and wife Sophie Hunter, a rep for the couple announced on June 13, "Benedict Cumberbatch and Sophie Hunter are delighted to announce the arrival of their beautiful son."

"The couple welcomed their son a few weeks ago, just days after Cumberbatch was named a CBE in the Queen's Birthday Honours List for services to the performing arts and charity," the tabloid said.

Sophie Hunter and Benedict Cumberbatch tied the knot on Valentine's Day just three months after announcing their engagement.