Heidi Klum puts on a busy display in a plunging brown dress before slipping into a skimpy gold bikini as she enjoys some downtime during Cannes Film Festival

Heidi Klum appeared in high spirits as she enjoyed a spot of lunch at Eden Roc during the 77th Cannes Film Festival on Wednesday. 

The German model, 50, put on a busty display in a plunging brown skin-tight dress, with a shimmering gold bikini underneath.

She accessorised with oversized gold shades and styled her golden tresses in loose waves. 

Earlier in the day, Heidi showed off her toned figure in the tiny two-piece while sunbathing by the pool. 

Her arrival back at Cannes comes almost a week after she was seen taking to the red carpet sporting a dramatic red gown on Tuesday for the premiere of The Second Act.

Heidi Klum appeared in high spirits as she enjoyed a spot of lunch at Eden Roc during the 77th Cannes Film Festival on Wednesday

Earlier in the day, Heidi showed off her toned figure in the tiny two-piece while sunbathing by the pool

But hours later at the gala dinner for the festival's opening ceremony, held at the Casino Le Palm Beach, Heidi debuted a different dress - a sleek black number.

Her gala dinner dress had a cut out at one side of her waist and an asymmetric hemline.

She was joined at the gala by Hollywood icon Meryl, 74, Barbie director Greta, 40, and Killers of the Flower Moon star Lily, 37.

Ensuring she claimed her own share of the spotlight, supermodel Heidi turned heads earlier in the day as she graced the red carpet in a deep red evening dress with a distinctive train and just enough length to show off her toned legs.

The German model needed the help of two male assistants to carry the lengthy train as she made her way along the Cannes Croisette ahead of Tuesday's screening.

The day before, Heidi posed for a few glammed-up snaps as she arrived at an event ahead of the first day of the film festival.

Heidi showcased her toned form while wearing a jet-black dress featuring a sheer panel along one hip.

The German model, 50, put on a busty display in a plunging brown skin-tight dress, with a shimmering gold bikini underneath

She accessorised with oversized gold shades and styled her golden tresses in loose waves

She enjoyed what appeared to be an aperol spritz and some food

She was chatting to a pal at the hotel restaurant 

She was previously seen relaxing alone outside in the sun

She opted for a natural makeup look for the pool day 

Heidi, who shares her four kids with ex-husband Seal , 61, to whom she was married from 2005 to 2014, enjoyed the trip solo

Her arrival back at Cannes comes almost a week after she was seen taking to the red carpet sporting a dramatic red gown on Tuesday for the premiere of The Second Act

Ensuring she claimed her own share of the spotlight, supermodel Heidi turned heads earlier in the day as she graced the red carpet in a deep red evening dress with a distinctive train and just enough length to show off her toned legs

She accessorised with several pieces of gold jewellery, while her bright blonde hair cascaded down her back.

Heidi arrived at in Cannes for the film festival on Sunday May 12 , donning an oversized pink leather jacket with a matching ostrich Hermes Birkin bag.

She layered the jacket over a pastel print bandana top with a matching scarf and baggy faded jeans with detachable zip-up legs.

The America's Got Talent judge finished the look with a pair of white trainers and some large round sunglasses.

Heidi was all smiles as she posed in front of a sign at the airport that reads, 'I love Nice.'

She teased something big as she posed on the balcony of her hotel room with the ocean in the background. 'So excited to be here in Cannes to announce something very very special,' Heidi captioned the post.

Documenting her descent into Nice on Instagram, Heidi rode shotgun in the cockpit with the pilots,' captioning videos: 'Viva la Cannes.'

Taking to Instagram on Monday, Heidi shared that she was heading back to the festival with the caption: 'Cannes Round 2 let's go!'

She teased something big as she posed on the balcony of her hotel room with the ocean in the background

She posed for a selfie with the pilots after landing, sharing it to her Instagram Story with a 'thank you.'

Heidi later shared a video from her car as she enjoyed the Parisian view, setting the clip to 'La Vie en Rose' by Zaz.

The former Victoria's Secret Angel also posted a video of her gorgeous suite, where multiple Mother's Day floral arrangements were waiting for her.

'For the best mom in the world. We love you!' read a note from her kids Leni , 20, Henry , 18, Johan , 17, Lou , 14, and husband Tom Kaulitz , 34.

She shares her four kids with ex-husband Seal , 61, to whom she was married from 2005 to 2014.