"Star Trek" actress Zoe Saldana's baby bump is starting to become prominent with her recent ensembles but she's keeping mum about her possible pregnancy.

The 36-year-old wife of Italian artist Marco Perego was spotted rocking "stomach-skimming styles" in the past weeks, E! Online said in a report.

The "Star Trek" and "Avatar" actress was seen sporting two different pairs of overalls in the past week prompting speculations that she and husband Marco Perego is expecting a baby. She paired her blue and white overalls with long sleeved tops but Zoe Saldana's baby bump is curved in the midsection.

She also wore a flowing white pants and a loose black and white stripped tank top during another sighting. To cover Zoe Saldana's baby bump rumors, the actress topped her outfit with a loose black cardigan.

Her other recent outfits also included a black flowing dress that revealed her growing tummy and another get-up where she covered her upper body with a loose yellow cardigan.

Zoe Saldana and Marco Perego had their secret wedding in London June last year after a short courtship.

Before the two hit the altar, "Star Trek" actress Zoe Saldana was in a relationship with longtime boyfriend Keith Britton. She said she has been ready to have children even in her past relationship but her partner was not.

"For years he wasn't ready. Then when he got ready, I didn't have time," she said on "The Conversation With Amanda de Cadenet" in April 2012.

If speculations that Zoe Saldana's baby bump is true and she is a mother-to-be, she could perhaps get tips from sister Mariel Saldana Webb who is expected to give birth next month.

The "Star Trek" actress Zoe Saldana and other sister Cisely Saldana threw a baby shower earlier this June to welcome the new member of their family.

The US Weekly reported that the baby shower was held in Caulfield's restaurant in Beverly Hills with tasty sweets and snacks from Sugar Factory.