Later in the night, the pair performed an outfit change each for the after party.
Alex changed into a white shirt and pinstripe blazer combo with a skirt and thigh-high boots.
Jess, meanwhile, wore a see-through outfit, but also donned a long pair of boots to complete her look.
The pair posed for snaps and shared a kiss together.
The Universal Music bash took place at 180 Studios in London.
Many stars that had attended the Brits partied long into the early hours.
Alex Scott braves wind and torrential rain as she stuns in tartan jacket on BBC
Alex and Jess recently enjoyed a holiday in Mexico together.
The duo headed to the Tulum region, soaking up the sun while enjoying plenty of activities.
While away in Mexico they tried scuba diving and zip-lining.
The weather was a far-cry from what it'll be during an upcoming challenge, with Alex one of a number of celebrities set to trek the arctic for Comic Relief.
Check out Alex Scott's most dazzling and daring outfits...
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Alex looked incredible as she wore a see-through dress and no bra to the GQ AwardsCredit: Alamy
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Scott, who works primarily as a pundit for the BBC, dazzled in a red leather outfit when presenting SoccerAidCredit: Rex
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She is a presenter on Football Focus and The One Show
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Alex made 148 appearances for Arsenal Women - but since quitting playing has appeared in magazines including AttitudeCredit: Virgin Atlantic Attitude Awards and Attitude magazine - on sale now
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The former right-back won 140 England Women's capsCredit: Virgin Atlantic Attitude Awards and Attitude magazine - on sale now
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Scott began dating singer Jess Glynne in 2023Credit: Rex
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The 39-year-old was spotted sharing a kiss with Jess as the couple went public with their romanceCredit: PA
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Scott loves to dress up and went to town on Halloween with this incredible outfitCredit: Getty
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She also dressed up as a scary clown on October 31Credit: Instagram @alexscott2
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Scott was awarded an MBE in 2017Credit: PA
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She attended Wimbledon with partner JessCredit: Getty